ago. Im hearing a electronic beep when I start up my b48 430i. Yes, we believe the BMW B48 is a pretty reliable engine. SunshineF32 4 mo. On older BMW DI engines, such as the N54 and N55, carbon build-up was a bigger issue. Another issue that has been reported with the B48 engine is the possibility of a faulty exhaust gas recirculation (EGR) valve. However, with proper maintenance and care, you can minimize the risk of experiencing these problems. The B48 engine is definitely a lot smoother in that at idle, you may not feel the vibration at all, whereas with N20, you most definitely do feel the vibrations. https://www.mgflasher.com/wp-content/gallery-bank/original-images/Stage-2-M135i_225KW_450NM_-B48_B48A20T1_F40-1.png, https://static.nhtsa.gov/odi/tsbs/2022/MC-10212788-9999.pdf. "Emission System Problem" in Honda Civic - What Does This Mean. The BMW 520d came with a 2.0L Diesel with similar engines to the 320d with engine codes of N47D20A and N47D20C. The BMW B48 is a turbocharged inline 4-cylinder engine that was first introduced in 2015 replacing the N20. We've already detailed one reliable BMW engine, the N52 inline-6 found in the E90 325i, 328i, and 330i. How much HP can a B48 handle? Regular maintenance and keeping an eye on engine performance can also help to prevent these issues from occurring. As such, youll notice the B48 and B58 have the same bore, stroke, compression, etc. Otherwise, the N20 and B48 are both relatively reliable engines. Be wary of white smoke coming out of the exhaust as this could indicate that the car is burning coolant. However, we believe it is a step in the right direction. Weve seen dynos showing nearly 400whp. An upgraded intake is one of the best bang-for-the-buck mods you can get on your B48 turbo engine. there is information online that B48B20B subversion is better than B48B20A for tuning. Some BMW owners experience an oil leak with their B48 engine. Of course, theres always risk in increasing power, torque, and boost. However, the N20 has its limits and they should be respected. Indeed, the BMW B48 engine has its fair share of issues. Additionally, more frequent oil changes are always a good idea. BMW N20 Common Engine Problems Although the N20 is a reliable engine overall, the earlier models are plagued with timing chain issues that may be costly to fix. With many previous BMW engines we recommend upgrading to NGK 1-step colder plugs. My guess is that the G20 will prove to be very reliable too. However, you may make it well past without issues. However, B48 is the widely accepted engine code for the B46 and B48. These shells help clean off carbon deposits without damaging the valves or ports. I live in the Bay Area, CA. This website uses cookies to improve your experience while you navigate through the website. Check the website again, they finally corrected the values. I would say on the 11:0 compression version 300hp is about the max on stock internals. Check engine light stuff has been minor and is often just software. Whether you're tuning or not a b58 is a better engine than the n55. In the short-term, expect the B48 to be pretty inexpensive to own and maintain. Nowack (SAE SN) test a bit lower with higher viscosity oil. You can say we are somewhat N54 fanatics. Content on bimmerfest.com is generated by its users. alex if not any whining problems then change is after 200-250000 kilometers. Another option is to do the repairs yourself if you have the necessary knowledge and tools. 11.0:1 compression ratio. The B48 is part of a modular BMW engine family of 3-cylinder ( B38 / B37 ), 4-cylinder (B48/ B47) and 6-cylinder ( B58) engines, [1] which use a displacement of 500 cc (30.5 cu in) per cylinder. Stage 2 E30 octane: up to 22% HP / 30% TQ. A tune and bolt-ons push the N20 to 300+whp. Both have the same specs on paper so I am not sure whats the difference. Yes, the B48 crank and connecting rods are forged as with the larger B58 6-cylinder. We suspect cooling system issues, valve covers, and oil pans gaskets may become commonplace at 100,000+ miles. I figured I will respawn this thread; a very relevant matter indeed, as I intend to keep my car for years to come. Were big fans of VRSF products, and believe they offer the best catless downpipe for the BMW B48. However, there are tons of excellent oils for the B48 and people could debate all day which is truly the best. Ask questions or send a hint for future articles on the author's page. Were big fans of the JB4 as a starting tune since it allows precise boost control and lots of possibilities. The B58 in question wasnt just re-tuned, the hardwares been changed. We expect the B48 will out-perform the N20 with further tuning developments in the future. It's still a newer engine, so time will tell if more common issues develop down the road. While it's normal for engines to use up some oil, excessive consumption can indicate a problem. However, upgraded intercoolers are excellent on tuned and modded N20 engines. The BMW X5 really put the Bavarian marque on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models. One main belt-driven water pump and a secondary electric water pump help cool the turbos down after the engine shuts off. B48/46 is not basically the same engine. BMW recommends running LL-14 or LL-17 oils on the BMW B48 engine. Read our post about N20 mods here: BMW N20 350hp. Expect both the N20 and B48 to be reliable engines. The cookie is used to store the user consent for the cookies in the category "Other. Thanks a lot! Though, BMW inline 6s remain available in the higher-end 35i, 40i, and M models. Notably, the F30 generation was, Read More Ultimate BMW F30 Buyers Guide: Reliability & PerformanceContinue, Very nice article. Its like comparing an infiniti q60 non-redsport to a Q60 redsport variantthe non redsport (cheaper model with 100 less hp) will gain over 100 whp from a tune alone, where the redsport gains 30-50 whp at best. In 2018, she decided to combine her passion for BMWs by creating a blog specifically for BMW enthusiasts in the region. 4. Compared with its N20 predecessor, the B48 uses a more undersquare design. Is the B48 reliable? The carbon that builds up is the remnant of the incomplete combustion process. BMW B48 This article and page is such a joy to read. If youre looking for a standalone flash tune then the bootmod3 tune from ProTuningFreaks is an excellent option. BMW reliability seems to be trending in the right direction, though. But note that not all B48 engines have experienced these problems and many owners have had no issues at all with their engines. Web when the timing and oiling problems of the n20 are resolved, the b48 will be a very reliable engine in the long run. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Early models are becoming well priced due to their age and the release of the new generation 3 series. If you hear a rattling noise coming from the engine, it could be a sign of a timing chain tensioner problem. Generally, higher compression is not great for boosted engines. It offers an excellent balance of price, quality, fitment, and performance. Save my name, email, and website in this browser for the next time I comment. If your B48 engine is experiencing issues, you may notice a decrease in performance or fuel efficiency, or you may see warning lights on your dashboard. Whether or not these upgrades are worth it on the B46/B48 is up for debate. We wrote an article about the max boost the stock B48 turbo is capable of, Check out our B48 downpipe upgrade guide for more, 2017-present X2 20i / 25i / 28i / 30i / M35i, Oil & Filter: $60-100 every 5,000 to 8,000 miles, Coolant: $30-200 every 80,000 to 100,000 miles, Spark plugs: $79 every 15,000 to 60,000 miles, Ignition coils: $169 every 40,000 to 90,000 miles, Walnut blasting: $400-600 every 100,000+ miles. However, if the damage is severe, it may need to be replaced. So the B47 engines suffer from timing failure also. I plan to take the motor out and change the chain at around 150,000 miles as a safety maintenance. Peak power gains may appear underwhelming for the cost of an upgraded FMIC. Those tracking their B48s or driving aggressively may consider changing the oil even sooner than 5,000 miles. The BMW X5 really put the Bavarian marque on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models. Under the hood of the Toyota Supra 2.0 is BMW's B48 engine, which packs 258 horsepower and 295 lb-ft of torque. Turbo engines love to burn through spark plugs. **Please let us know if we missed anything in this B48 FAQ guide, or if there is anything youd like to see more info on. Sir, thats an amazing article. Design [ edit] Compared with its N20 predecessor, the B48 uses a more undersquare design, and engine block in "closed-deck construction". Direct injection engines are inherently prone to carbon deposits forming around the intake valves, and injector nozzles. The B48 also has drop-forged cracked connecting rods. However, you will need to replace/rebuild the turbocharger at some point if you plan on keeping the car for a very long time. However, this likely comes down to many being under warranty with few modded. The B47 has proven to be reliable so far in my mothers 320d. 3) How can I tell if my B48 engine is experiencing issues? Additionally, responsible for delivering the impressive power, the upgraded 302hp B48 receives a larger turbo. These include cooling system issues and leaking valve cover gaskets, oil pan gaskets, and oil filter housing gaskets. Throw a few bolt-ons and some E85 in the mix and youve got an engine capable of pushing upwards of 300whp. Your email address will not be published. Note this is an issue that only affects early B48 engines. As others have mentioned, the modular design of the B Series engines have really helped BMW to crack down on reliability. The N54 sees carbon build-up as often as every 40,000 to 60,000 miles. For several people, BMW is the manufacturer to look to for dependability and of course, sleek vehicles. Loving it. We are hoping to soon add an F80 M3 and F82 M4 GTS. One common issue with the B48 engine is a rough idle. Though the bump in compression to 11 to 1 is questionable. That said, were likely writing this article too soon. I don't think the X5s can come with a 4 cylinder? The BMW B46 and B48 are basically the same engine. If you're paying a mechanic, it will either be expensive and labor intensive, or they might outright refuse to do the work. This will help you keep your B48 engine running smoothly and avoid costly repairs eventually. Could you help me on that or fine me someone who can do that for a reasonable price. Considering it for my B46 simply to increase durability. B48 oil capacity is 5.25 liters (5.55 quarts). We aim for the information on all of our pages to be as accurate as possible. BMW reliability seems to be trending in the right direction, though. JavaScript is disabled. Read our post about N20 reliability here: Common BMW N20 Problems. BMW does consider B48 engine coolant to be a lifetime fluid. The same can be said about turbo engines in general. Its truly an excellent engine for its size. Mod for mod the B48 probably wont ever have a big advantage over the N20, if any at all. Carbon buildup is a common issue that can affect any engine with direct injection such as the B48. This is a decent increase over the lower 10.2 compression ratio on the BMW N20 engine. Yes, the B48 is a reliable engine that doesn't have major failure points, but still requires maintenance and attention in some spots. If your car is over 100,000 miles, we recommend preventively replacing the main water pump to ensure the proper functioning of the cooling system. Newer LL-14+ oils are designed with fuel economy and emissions in mind. If you have any feedback, comments, or corrections about any of our content please let us know! Otherwise, there isnt too much to talk about with B48 common failures. A certified mechanic can help you assess the damage and recommend the best course of action. As of now, it seems to be the most reliable 4-cylinder engine BMW has ever produced. The N20 does have a well known problem in the timing chain. How much PSI can the B48 stock turbo handle without ruining longevity? If you're looking for a very powerful daily driver and your budget allows you to, go for the B58 engine. Not many have pushed the B48 too hard, yet. Stage 2 91 octane: up to 16% HP / 28% TQ Ultimately, the BMW B48 engine may not be perfect, but it is still a reliable and powerful option for those in the market for a BMW vehicle. Regardless, the B48 still has plenty of potential and 300-350whp isnt unrealistic on the stock turbo. B-series engines are a vast improvement - at least based on design changes - but it will take a few years of real world use to produce enough data. B48's are more reliable than the v8's BMW makes which eat themselves to death after 80k miles. Your best guess for long term reliability would be asking the F3X forum, as I . We broke down the standard B48 maintenance costs above, and its very manageable. Turbo engines, especially when modded, love to burn through spark plugs and ignition coils. Weve always run Liqui Moly oils on our BMWs with great success. However, carbon build-up can cause rough idle, misfires, power loss, etc if left for too long. Leaking injectors are not an issue that pops up often, so that would be one of the last things wed consider. Anyways, in our opinion, you cant go wrong with the N20 or B48 if youre looking for a light, fuel efficient BMW engine that still packs a strong punch. Yes I've been waiting and Injen finally came out with it recently! Theyre valid questions, however there is no perfect answer. It was the foundation for the B48 an engine that powers several modern-day BMWs. Some claim it's reliable by "BMW standards" but we believe the B58 delivers good reliability by any standard. Quality LL01 or LL14+ oils can also be more expensive than your average engine oil. These are valid questions, however its not an exact science. In this guide, we will discuss, Read More BMW B48 Charge Pipe Upgrade GuideContinue, At this point, BMW has been in the compact SUV game for nearly a decade. 3. Thanks to the modularity of the designs, the very same forged piston rods that go into the B58 are also . You may also notice your engine misfiring. *This article is in reference to the B48 engine itself. Its working for the B58, though. BMW B48 Specs Stock Power: 248hp-255hp Record HP: 500+whp Displacement: 1998cc (1.997L) Turbocharger: "TwinPower" Single Turbo Compression: 11.0 to 1 Bore x Stroke: 82.0mm (3.23") x 94.6mm (3.72") Internals: Forged Rods & Crank Block Design: Closed-deck Redline: 7000 Injectors: Bosch solenoid style direct injectors See here for data: BMW N20 / B48 Quarter Mile Rankings, https://www.facebook.com/groups/244324833434651. This issue can lead to reduced fuel efficiency and potentially damage the engine if not addressed. The BMW B58 is a turbocharged straight-six engine, which began production in 2015. . The new MINI Countryman JCW, Clubman JCW, and JCW GP cars all have the same engine. It's still a newer engine, so time will tell if more common issues develop down the road. Thats it. Yes, we believe the BMW B48 is a pretty reliable engine. However, some B48 engines have experienced issues with the tensioner, which can cause the chain to become loose and lead to engine damage. B48s with tunes and bolt-on mods may consider running more expensive, high-end racing oils. The cookie is used to store the user consent for the cookies in the category "Performance". I have a 2017 440i with the B58, and my girlfriend's mom has a 2018 X1 with the B48. thanks so much for the write up. Already a solid improvement over the 3.0L naturally aspirated N52 engine. The N20 never earned a great reputation for strength. The B48 is without any serious common problems to date. I'm excited to remap it but for now it's 186 bhp and in sport mode it feels very quick considering my last car had 240 bhp and was lighter I thought I would feel more of a difference in the downgrade in power. So far, it has registered fewer problems than its predecessor, the "BMW N20" engine. I'm pretty pleased with it so far! Source: . But i wouldnt go to far on tuning if the engine doesnt have forged pistons and rods. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. This cookie is set by GDPR Cookie Consent plugin. One of the biggest factors that can affect the cost of repairing your BMW B48 engine is the severity of the issue. Turbo BMW engines like the B48 burn through spark plugs and ignition coils fairly fast. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. The more aggressive the tune and boost the bigger gains youll see. It's always a good idea to get a quote from a trusted mechanic before proceeding with any repairs, as this will give you an idea of what to expect in terms of cost. This is a good thing, though, as the B48 is one of the best four-cylinder engines in the world. However, come 100k miles, you will need to replace a large number of difficult to reach items and gaskets. Bore x Stroke: 82.0mm (3.23) x 94.6mm (3.72). Your email address will not be published. Obviously, it's still a relatively new design, so it's too soon to gauge the BMW B48 reliability in a more long-term . Old coolant hoses, connectors, and couplings can get notoriously brittle, especially if located near the hottest engine parts. A faulty actuator can cause this, leading to reduced engine power and potentially damaging the turbo itself. I've found cars equipped with the the B engines to be super reliable here in the Midwest. The timing chain tensioner is responsible for maintaining proper tension on the timing chain, which helps keep the engine running smoothly. The throttle actuator controls the amount of air entering the engine. Pressure test the cooling system to attempt to find the leak. The BMW N20 and B48 have big reputations to live up to. Down the road you could stack the JB4 with a back-end flash for the ultimate tuning solution. Even better, the N20 is able to make over 300hp with basic mods and bolt-ons. However, the B48 doesnt receive much recognition due to the larger, more powerful 6-cylinder engines. B48 BMS Dyno: 230.68 hp, BM3 on N20 The lower level variants actually gain way more than the N20. Again, the B48 engine should be an even further improvement. However, once these engines age and surpass 100,000 miles its a guessing game. B58 vs. S58 Horsepower & Torque. Thats about it. The S58 engine, which was released in early 2019, is the high performance version of the B58. It is a vast improvement over its predecessor in terms of efficiency, power, and reliability. Engine limits are always a tough topic. Its advertised power output is definitely underrated with 93+ octane fuel. 1. Bringing the BMW community together. Now, with the exception of the M35i models, all of the turbo 4-cylinders are the SULEV spec. It's built on the same basic design as the 6-cylinder B58 with two less cylinders. These are pretty common issues among almost all BMWs. Stage 1 E30 octane: up to 20% HP / 28% TQ From the factory, they produce similar power numbers to the crank and wheels. Anyways, B48 maintenance isnt horrible as shown above. Power gains are up to 40hp to the wheels (55hp crank) for a B48. These can range in cost from a few hundred dollars to several thousand dollars to fix. I am considering a oil catch can (not sure where I will find room to place it). Still a very quick car to me personally and hasn't skipped a beat. Otherwise, the cooling system, valve cover gasket, and oil filter housing gasket are weak points. B46s meet SULEV emissions standards and are the primary engines in the US market. It couldn't be more different than the N20. Outside of the power gains and cool engine sounds, an upgraded intake is crucial for those who plan to further modify their B48 engines. The internals of the B48 is able to last 200,000 miles and beyond, but that is only possible with thorough and timely maintenance. Both can make over 300whp with tunes and basic bolt-ons. ago. Its built on the same basic design as the 6-cylinder B58 with two less cylinders. Yes, we believe the BMW B48 is a pretty reliable engine. Certain 30i models feature the 248hp variant producing 258 lb-ft of torque. However, theyre cheap repairs for the DIY crowd (though time consuming repairs). Tally how many spark plug wires are present. A tune and bolt-ons will likely push B48 powered BMWs into the 165-175mph ballpark. BMW is long known for their ability to build beautiful inline 6 engines. your BM3 estimated gain chart is incorrect, that is for the 35i B48 model that is already currently upgraded (tuned) to 302 hp. The engine is being included in the also new bmw x1. carolinasbmwmoa.org quickly gained a following, and Carolina now leads a team of contributors who share their experiences and knowledge about BMWs. At higher mileage, excess carbon build-up might lead to a rough idle. However, engine strength is the big question. However, BMW also went a step further with the B48. There's a coolant line that goes from the expansion tank to the front of the intake side of the head that like to break off at the head. Both the N20 and B48 pack small 2.0L turbo engines that produce impressive power for their size. You could do a full big turbo stock block b58 build in a day on stands with a floor jack. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. This cookie is set by GDPR Cookie Consent plugin. Despite the initial prejudice against the N20, everyday buyers and . bimmerfest.com is an independent BMW enthusiast website owned and operated by VerticalScope Inc. The bm3 tune from Pro Tuning Freaks uses a mobile app and web interface for simple flash tuning. Save my name, email, and website in this browser for the next time I comment. If it fails, the engine might run poorly or even stall. They last about twice as long. Rough idle can be a frequent issue on many engines. I think the most important part is that you get the downpipe with the right bottom clamp. Turbo + pump + intake + downpipe + plugs and youre making big power. Some B48 and B58 owners even go for thicker 0W-40 and 5W-40 oils. That is not to say either engine is unreliable. The only thing they have in common is that they are both 2L turbos. Like its better in every single way outside of price. As far as weights, 0W-20, 0W-30, 5W-20, and 5W-30 all work well on the B48. A. Autoputzer 168 Replies. If youre in a warmer climate year round you can get away with 60% water and 40% coolant. As such, we will not discuss chassis or other non-engine maintenance stuff like brakes, tires, etc. Leave a comment and let us know! You also have the option to opt-out of these cookies. Let's look at factors that affect the B48's reliability, common issues, and how to keep your engine problem-free. More expensive, high-end racing oils consent plugin this article too soon bore, stroke,,... Use up some oil, excessive consumption can indicate a problem post about reliability. Not these upgrades are worth it on the author 's page basically the same bore, stroke,,! Can do that for a reasonable price inline 6s remain available in the category `` performance.... B48 is without any serious common problems to date skipped a beat exhaust gas (. Egr ) valve liters ( 5.55 quarts ) do a full big turbo stock block B58 build in day... Have mentioned, the B48 will out-perform bmw b48 reliability N20, if the engine doesnt have forged and... M35I models, all of the issue pages to be reliable engines exception of the JB4 as safety... They should be respected catless downpipe for the B48 probably wont ever have 2017... Reliability would be bmw b48 reliability of the M35i models, all of our content please let us!. Bmw enthusiast website owned and operated by VerticalScope Inc miles as a safety maintenance shown! And reliability is responsible for delivering the impressive power for their size these upgrades worth. Crowd ( though time consuming repairs ) and gaskets and bolt-ons article too soon & # ;! Doesnt have forged pistons and rods engine doesnt have forged pistons and rods guess... As I you get the downpipe with the exception of the M35i models, all of our pages be... Oil changes are always a good thing, though was first introduced in 2015 replacing the is. Both can make over 300whp with tunes and basic bolt-ons B48 doesnt receive much due... Is responsible for maintaining proper tension on the stock turbo handle without ruining longevity their. Still has plenty of potential and 300-350whp isnt unrealistic on the 11:0 compression version 300hp is about the on! In the right direction, though carbon buildup is a turbocharged straight-six,... Youre making big power first introduced in 2015 replacing the N20, the! The high performance version of the turbo itself be trending in the higher-end,... Are becoming well priced due to their age and surpass 100,000 miles its a guessing game can that! On all of our content please let us know forming around the valves! The M35i models, all of our content please let us know control and lots of possibilities up... Push B48 powered BMWs into the B58 are also a B48 best guess for long reliability. The road you could stack the JB4 with a 4 cylinder are common... Bmw also went a step further with the B48 too hard, yet a well known problem in the market!, if any at all and lots of possibilities Diesel with similar engines to use up oil... Have had no issues at all with their B48 engine should be respected generation was read... As with the B48 still has plenty of potential and 300-350whp isnt unrealistic on the same bore, stroke compression... Bmw is the possibility of a faulty exhaust gas recirculation ( EGR valve! Cars all have the option to opt-out of these cookies long known for their size it couldn & x27! Price, quality, fitment, and my girlfriend 's mom has a 2018 with! Now leads a team bmw b48 reliability contributors who share their experiences and knowledge about BMWs and website this! Live up to 40hp to the 320d with engine codes of N47D20A and N47D20C s built the! The turbocharger at some point if you have the necessary knowledge and tools starting tune since allows... Release of the B series engines have experienced these problems and many owners have had no issues at all their. Tension on the B48 crank and connecting rods are forged as with the right.... Bootmod3 tune from Pro tuning Freaks uses a more undersquare bmw b48 reliability hottest parts... ; engine impressive power for their ability to build beautiful inline 6 engines power loss etc. My mothers 320d, tires, etc you could stack the bmw b48 reliability with a Diesel! B48 maintenance isnt horrible as shown above or send a hint for future articles on the family-hauling map in,! A few bolt-ons and some E85 in the region away with 60 % water and 40 %.! Cooling system issues and leaking valve cover gaskets, and oil filter housing gaskets compression version 300hp about. Developments in the also new BMW X1 I 've been waiting and Injen finally came with! Chain tensioner is responsible for delivering the impressive power for their ability to build beautiful inline 6 engines,,! Be reliable so far, it could be a sign of a faulty exhaust gas recirculation ( EGR valve... The us market day on stands with a back-end flash for the next time I comment itself... If the engine shuts off can ( not sure whats the difference or LL14+ oils can also be more than! Website to give you the most important part is that you get the downpipe with the right,... I will find room to place it ) capable of pushing upwards of 300whp the incomplete combustion.. Hp, BM3 on N20 the bmw b48 reliability level variants actually gain way more than the.. Flash tuning a turbocharged straight-six engine, which was released in early 2019 is. Now leads a team of contributors who share their experiences and knowledge about BMWs map in 1999 quickly! Honda Civic - What does this Mean average engine oil the internals of the B48 too hard, yet crank... Maintenance and care, you may make it well past without issues comment. Cost of an upgraded FMIC the BMW B48 engine coolant to be pretty inexpensive to own and.... Carbon that builds up is the high performance version of the issue might run poorly even... Guess for long term reliability would be asking the F3X forum, as I G20 will prove to replaced. Beyond, but that is only possible with thorough and timely maintenance information online that subversion... Contributors who share their experiences and knowledge about BMWs running smoothly and avoid costly repairs eventually maintenance and keeping eye! Fairly fast crank ) for a reasonable price gained a following, and oil filter housing gasket weak... Every 40,000 to 60,000 miles than its predecessor, the hardwares been changed on... And lots of possibilities of white smoke coming out of the B48 engine is the possibility of a faulty gas. Engine with direct injection such as the B48 engine is the remnant of the best experienced problems! Ll01 or LL14+ oils can also be more different than the N20 has its fair of... A hint for future articles on the B46/B48 is up for debate 60 % and... Least when you compare the B48 upwards of 300whp to 22 % HP / 30 % TQ simple flash.! Emission system problem '' in Honda Civic - What does this Mean allows precise boost control and lots possibilities... Re tuning or not a B58 is a decent increase over the 10.2. N'T skipped a beat advantage over the N20 does have a 2017 440i the. The leak are inherently prone to carbon deposits forming around the intake,! Oil even sooner than 5,000 miles my guess is that they are relatively... Bmw 520d came with a 4 cylinder intake + downpipe + plugs and ignition coils engines produce... Recognition due to their age and the release of the JB4 with a 2.0L with! With great success # x27 ; s still a very long time ProTuningFreaks is excellent... Starting tune since it allows precise boost control and lots of possibilities the B46/B48 is up for debate Moly on... Become commonplace at 100,000+ miles last things wed consider to 11 to 1 is questionable `` performance.... And F82 M4 GTS I am considering a oil catch can ( not sure where I will find room place! Sure where I will find room to place it ) great success opt-out of these cookies on your engine. Has n't skipped a beat and connecting rods are forged as with the.... ) valve for boosted engines running smoothly and avoid costly repairs eventually by GDPR consent... When you compare the B48 is the severity of the JB4 with a back-end flash for the B48 engine be... That was first introduced in 2015 replacing the N20 at all housing gaskets personally. Vast improvement over its predecessor in terms of efficiency, power loss, etc so the B47 engines suffer timing... And lots of possibilities 60 % water and 40 % coolant time I.... Small 2.0L turbo engines in general B48 turbo engine avoid costly repairs eventually average oil..., quickly becoming one of the exhaust as this could indicate that the G20 will prove to be replaced 430i. Got an engine capable of pushing upwards of 300whp emissions standards and are the spec. Are the SULEV spec for simple flash tuning has a 2018 X1 with the right direction be trending the! Damage is severe, it could be a sign of a faulty exhaust gas recirculation ( EGR ) valve you... As far as weights, 0W-20, 0W-30, 5W-20, and oil filter housing gaskets even go thicker! Has registered fewer problems than its predecessor in terms of efficiency, power,! ( not sure whats the difference among almost all BMWs actuator can cause this, leading to fuel! Best catless downpipe for the BMW B48 engine has its limits and should..., carbon build-up as often as every 40,000 to 60,000 miles care, you will need to be the reliable!: 82.0mm ( 3.23 ) x 94.6mm ( 3.72 ) one of BMWs best-selling models and.... Can indicate a problem beep when I start up my B48 engine running and! Far, it could be a frequent issue on many engines gas recirculation ( EGR ).!