Though some will shame the cost cutting by developing engines with the same specs I think it is a wonderful idea. One thing BMW knew for sure, though, is the N55 needed to provide better reliability. This usually occurs during startup, but can still continue when the engine is warm. Currently stock on stage 1. . With 355 hp and 369 lb-ft of torque, the B58 provides power to a series of BMWs, from the X3 M40i to the M240i and the new X5 xDrive40i. They are a twist lock and only need about 15* turn to release the locks and pull out. Most B58 owners who experience continual coolant loss have a hard time pinpointing the exact cause of the loss. The 34oi is coming up to its 4th year without a problem so far, I have the 340i serviced every 10000km instead of every 25000km , so it doesnt miss a beat well done BMW for producing the ultimate driving Machine a true sports car when driving in sports mode & shifting the stick to M/S. Ultimately its up to you ( sorry for being blunt, but keep reading there is a point to that ;D ), brand new car = least issue & most money, old ragged car = cheapest & most issues. Injectors are getting loud again at 200k so its time to replace them. I have a 440i with m performance and sound kit during cold start there is shaking in the car I can feel the shaking if I hold the stearing wheel with both of my hands I am not sure what might be causing the problem only have about 25k miles showed to dealer they dint find anything They keep forgetting that only at around 2000 trend of thermostats should fail open, not close became an industry wide thing. If possible, How much would it cost? Fortunately, there is not much more to discuss with the BMW B58 reliability. Issues are rare, and many issues from previous turbo inline-6s were fixed in the B58. Awesome to hear congrats on the new 340i! The B58 is part of BMW's new modular engine family, each engine using a displacement of 500 cc (30.5 cu in) per cylinder, following the B38 and B48 engine.. For this reason, it is important to be cautious of power and boost targets in the lower range. the vanos solenoids were a 20min job with a cold engine. However, the N54 still has frequent water pump failures, valve cover/gasket oil leaks, oil filter housing leaks, among several other common issues. Has anyone managed to get this problem sorted out yet?And if so could you let me know I liked the n55, but the f10 wasnt the right platform for it, too heavy too wallowy. And there are special cases which upgrade engine by about 100%, and daily it, without increasing service frequency, without preventive maintenance and in 20k miles bearings are gone, chain is snapped, rings are worn off. Many B58 owners are experiencing low coolant in the main tank. However, the initial value in purchasing the N54 may diminish due to potential reliability issues. The B58 is a marginally larger engine displacing 2,998cc compared to the N55's 2,979cc and weighs 18 lbs more, but while making notably more power. in. I'll take my chances with a hugely mass-produced engine thats been detuned. Why not? it now has 125,000km on the clock and is stock 300HP. Hi Adam, Thanks for the information. Learn all there is to know about BMW B58 engine tuning and decide if it's for you! The B58 is more reliable than the N55. I imagine a lot of (even most?) Im impressed to say the least. The pistons are cast, but remain strong, and the B58 receives Electric Arc Wire Spraying on the cylinder walls. Yes, B58 is reliable. Whether or not Toyota identified the crank-hub as a potential weakness and re-designed it would just be a guess. . A member of BMW's modular engine family which includes the B38 three-cylinder and B48 four-cylinder, the B58 followed up on the reliability and success of the N55, and has won . And thats the N54 which is regarded as one of the less reliable BMW engines. Since the initial release of the BMW N54, the engine has gained quite a positive reputation in the tuning community. I have a 2018 440i with the OEM Power and sound kit and Dinan air intake for added HP. We are hoping to soon add an F80 M3 and F82 M4 GTS. *Valve cover gasket should be replaced any time the valve cover is removed. Though, it may be excessive on lower mileage B58's. N55 is my preferred engine in the E92 lineup. TwinPower Turbo which is a twin scroll single turbo. Never put excessive loads on the engine when its still cold. Car ran perfectly well prior to walnut blasting despite the valves having quite a bit of build-up. It has honestly amazingly smooth power delivery and sounds better. (4.2 l)My '06 TJ has the 4.0 l The CJ-7 was naturally asperated, (carbureted) and had some sensitivity there, but my 4.0 l is fuel injected and has been rock solid! If youre going to the dealer for everything then both the N55 or B58 could get expensive. Disintegrated oil filters pop up frequently, but are not serious in most cases. Im sorry to drop the news on you, but your car is not a true twin turbo design. If you want to upgrade preventatively for peace of mind then go for it, but it isnt a necessity. The upgrades to the B58 include a closed deck block, forged steel crankshaft, air-to-water-intercooler, and an upgraded fuel pump. Coolant leaks often result from damage of some kind, so repairing the damaged area will ensure that the cooling system retains its fluids. However, there is one more thing. For more information, check ourdisclosure. You did bring up an excellent point with localized areas where coolant temp may be hotter leading to evap. Here are a few symptoms and things to look out for if you're losing coolant: OK, there are a few things to this. I bought it at about 75k. Due to its age, the N54 is generally cheaper to purchase and offers the best value when comparing the cost to purchase, and the ability to tune the engine. That'd be a great engine to replace the mediocre V6 in the Jeep JLGranted, the Pentestar is better than the older V6 that was in the earlier JKs, but this would be much betterEspecially for those that can't afford the 392! Washed my hands with it and looking forward to my next car (not BMW). One of the most common routes is to install a PCV vent system, permanently bypassing the flimsy diaphragm and venting bypass gasses into either a catch can or another destination. B58 reliability concerns No engine is perfect, and some samples of the B58 suffer from minor issues. That being said, there are a lot of bad engines out there! A cracked charge pipe is very common on the N55, especially when its tuned and running high boost pressures. B58 to N55 Comparison. The BMW B58 is a turbocharged straight-six engine, which began production in 2015. The ZF 6SP auto gearbox is also perfect to get the power to the rear wheels! One of our N54s went 113,000 miles before its first walnut blast. Happy I stumbled on this website and will definitely be reading more. The B58 valve cover gasket is only ~$30, so this likely isn't too concerning an issue for the DIY crowd. For a better experience, please enable JavaScript in your browser before proceeding. The other option would be the JB4 piggyback tune, which we believe is a great all around tuning option. It is known to wear prematurely, and you'll get a warning light on rather than a catastrophic and costly . It may not display this or other websites correctly. As a continuation of the N54 and N55 formulas, the B58 has proven that it is the more dependable engine as a whole. Whats your thoughts on this? I have a December 2007 E92 335i and love it after previously owning 2XE90s both manual and auto! Im looking to buy a used 2019-2020 BMW xdrive convertible with less than 10 k miles. All rights reserved. B58 is obviously a winner. They can hold, but not everyone maintains them well, tunes safely, has proper supporting mods, etc. Hopefully, it's not as bad as the below image. Over time, the housing and the electronics inside degrade and fail. The Grenadier will be no different. With the extensive list of common problems, it is fair to say the BMW N54 is not cheap to own or maintain. Minor leaks may not produce enough smoke to notice. It's always the minority of people with issues that shout the loudest. Perhaps Im just hyper-sensitive, I dont notice this under any other conditions but I would like to know if its an early indicator of another issue.. Ever since the twin turbo N54 hit the markets in the 2007 BMW 335i, BMW has been building on the design of the turbocharged, direct injected inline 6 engine. Space is very limited but its doable. Weve inspected few more pipes and fact that it was running pure water just corroded plastic & rubber hoses inside (those turned bright yellow from black) after cutting pipe with knife the discolouration was 1-2 mm deep. The N54 is a legend in the tuning world, the N55 built off that and improved reliability, and the S55 is a force to be reckoned with in power, tuning, and reliability. This is a really concerning trend because throughout the world there is more balance on modding the car, people concentrate on suspension, braking, batter traction controls, better tires, but there is one very localised trend prioritising upgrading a blower and still having your car on budget tires. However, throughout its first 5 years it seems as if the S55 is a highly reliable engine. Stay safe everyone! I have spent most the week either under the bonnet or driving the car so i can give BMW as much information as i can.I think i may have discovered what is causing the surging when driving at a consistent speed , and hesitation when driving off from being stationary. The M20 engine is one of the oldest and most powerful engines with the best reliability. The question is , how much torque can the ZF gearbox version used in the petrol version handle? "Natural" is in quotations for a reason. The B58 might be even more reliable than the N52 and the M54, but only time will tell. Acnam Infotech, BMW Tuning - BMW Performance & Tuning Guides, News, Videos. However, there is one catch on the B58. Congrats on the purchase! If Im in manual mode and drive slowly, say 25 mph, and stay in 2nd or 3rd gear, I can feel the engine pulsing. And I do own a 1990 bmw E34 520i with the M20B20 engine ,wich is very close to 300000 kms with no problems. I track it and the engine has been holding up very well. Lets look at both engines in detail to find out why the N55 is not as reliable as the new B58. Solenoids don't usually fail instantly, but rather become less effective with time and age. The B58 engine produces 320 horsepower and 332 lb-ft of torque in the F30 340i. DIY everything $300 to $750 a year It does not cause decreased engine life or reliability but does affect driving and performance. Our site is dedicated to all things BMW Tuning related. Cant wait to compare the BM3 to the Dinan Stage 1. This applies to coolant hoses and coolant connecting flanges. It . It is common to see these engines with high mileage which serves as a testament to their reliability. Just go hard more. To increase the longevity of either your N55 or B58, it is recommended that you follow the regular maintenance schedule and stay on top of preventive maintenance. We think the Supra carrying the B58 helps the platform a lot, too. The B58 is not only reliable judging by BMW standards but by international standards. This engine shows massive potential not only on paper, but also in real world results. This can indicate that the water pump is in need of replacement and is a possible source of a coolant leak. Huh, B58 can make a lot of power and is the best for reliability. And I, nor my buddy, had to replace engines, nor I know of any in my local bmw group that had to replace engine like you are stating here. Agree with you both there Tazzieman/Spjnr. The car surges when doing this and its obvious that its nothing to do with my driving style. To find out more, read our Privacy Policy. Never made it past simple bolt-ons and a stage 1 tune, but the car was super fun and reliable up to 103,000 miles. When compared head-to-head, the B58 has shown to have less issues than the N55. Notable changes from the N55. Completely misread that. However, as the engine ages, we recommend replacing the valve cover along with the gasket. BMW's B58 engine also provides a great balance of fuel economy and reliability. Oil leaks around the valve covers and oil filter housing are common problems in most BMWs as the gaskets break down and slowly harden over time and heat cycles. Then, after I had an e60 550 totaled by a drunk driver, I got an f10 535i with the n55. The BMW B58 engine is a turbo 3.0L inline-6 that was first introduced to BMW models in 2016. Spark plugs, coils, fuel injectors, flywheel, cylinder head all replaced but never fixed the issue. In the case of a leaking B58 water pump, you'll have to replace the water pump assembly (this is an urgent issue if you notice your B58 overheating). Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. Im not convinced there isnt a secondary issue. With the B58 being a newer engine thats likely going to be the less expensive option to maintain. This isn't absolutely necessary but will help get any possible filter debris out of the oil. what a great site you have! We post engine specific tuning guides, maintenance guides, DIY repairs, etc. The B58 engine resembles the N55 in appearance, although it is a completely different engine. Of the engines referenced in this post Toyota is only using the B58. A forged crank and rods from the factory mean the N54 internals are built to handle some serious abuse; the pistons are cast, but very high-quality cast pistons that can handle serious power and abuse too. Bam, 45min to an hour for the whole job. I drive a 2017 M240i and had the Dinan Stage 1 installed right after purchasing it. Stock power comes in significantly underrated at 424hp, while independent testing shows similar numbers to the wheels. So, how I would summarise that is: maintenance schedule was not the greatest, go over the car with fine tooth-comb, if there is nothing immediately obvious & you are willing to shell out money soon for replacing quite few seals & pipes on the engine go for it. Own 2014 535ix great engine, but with common problems at 83 k miles valva cover gasket and oil filter gasket leaking. or these are minor for this strong engine? Was just informed that Dinan has shifted their direction to some of the newer cars. Thank you. Additionally, it receives the forged crank and rods as with the N54. Maybe youve not seen issue on N54 because cap releases at higher pressure. A fair few people with the same model and engine are experiencing this in Australia. We did not include that as we do not consider carbon build-up an issue. Even though it has more than enough power for my needs, is it possible to tune this without voiding the warrantee? Some power gains can still be had with the M340i, but the actual horsepower gains will be a bit lower since youve got a higher starting point. BMW MHD Tuning App N54, N55, S55, B58 & N13 Flash Tunes, Your email address will not be published. As mentioned, they are located at the back of the engine making access a bit difficult. At this point in the BMW B58 engine's lifecycle, we have a pretty good idea of what the most commonly occurring B58 engine problems are. Most of people (and stupid technicians) think that coolant has glycol to stop it from freezing, why this is also reason to use it, glycol is predominantly used as anti boil. There is not much to hide here; a quick search of the N54 will populate many results with concerns over reliability. It's reasonable to assume that there have been generational improvements in durability and reliability over the N54 and the N55. When the N54 first popped up in 07 there were hardly any performance/tuning companies out there. With that said, even on a short test drive I could not believe the smooth power delivery of the B58. Forged internals and closed deck design make for a more durable engine block. Hi mate,thanks for your reply. Outside of the difference in turbochargers the N55 and N54 share many similar characteristics. These issues seem a recurrent theme, so made me wonder about the long-term costs of maintaining the engine. In terms of engine and chassis design, BMW is still one of. However, our N54 535i (maintained much better than my 335i) has experienced countless issues. Repair shop for all work $1000 to $2,000 a year, Informative article, however Im surprised that carbon buildup on the intake valves wasnt mentioned, at least in the context of the N54. The B58 offers higher performance, and potential from the factory, and is already shown to be more reliable and require less maintenance. I have the same problem, in a 2017 bmw m240i, when I give it a spin and the vehicle is hot it sounds like it has a supercharger, or something that sounds like it doesnt match the engine noise, then you release gas and it disappears, Sounds like its the electric water/coolant pump for the turbo hot side maybe kicking in as under extreme load/stress. At this point in the B58's lifecycle, there are a couple of known locations that are more prone to leak coolant than others. Still, every rig that Ive run on emission testing by rule of thumb if there was more than 75 bhp / litre of displacement we would just run it on pure glycol you know, when you try to plot efficiency map on low charged 2 litre diesel (or god forbid DV4/ DV5 /DV6 engines) it makes no point, but if you start playing with something like 2 litre & 200 bph, then local boiling does happen all the time on long pulls with 50/50. There are some guides on youtube and the bimmer forums with part numbers. Disclaimer: This site contains affiliate links. Im new to all of this. Dont hesitate to pack those with even more detail ! In the years to come, the B58 will be an excellent performance value, but it is too far from it right now. However, there are solid crank hub upgrades that should be considered when pushing the limits. Really appreciate the info. Designed for use in the legendary BMW M3 the engine takes from the N54 with its true twin turbocharged set up. Someone knows what is due? It does not have signs of issues with any of its internal components. Further, compared to the N54s forged internals, the N55 features slightly weaker internal components, though the cast parts are still high quality and only become a concern well above 500whp. Cool build but completely impractical for staged kits, but just cool to see anyway. My 2017 M240i with 27,000 kms is suffering from the same symptoms. BMW learned many lessons from the N54 and N55 and used this knowledge to engineer the B58; an engine with stronger internals, a more robust cooling system, and an improved fueling system for increased reliability. My regret (not even a problem) was that when moving from E to F, BMW matched gearboxes and diffs more closely to stock engine torques, which in my mind was a bit of step back, because you could always count on 3 things with BMW gearboxes in the past 1. they did not provided greatest feedback 2. they always had decent of headroom potential tune 3. every-time you changed gear you felt like you reloaded WW1 full caliber rifle. This is a misconception. Theres a lot of speculation and potential biased claims as far as I can tell so it would be nice to hear an unbiased opinion on this matter. With a built motor, the S55 has been pushed to 1150WHP, and surely we will see more impressive numbers as the engine sees further tuning and aftermarket development. Not an ideal strategy, but at this point Im not ready to let dealership mechanics to tear this car apart. Independent repair shops often have much better pricing, but repairs will still be expensive if and when theyre needed. Just a question of how the other internals fare. As such, it can't hurt to replace the valve cover while you're in there. Considered my car is stage 1 tuned. The M340i is a beautiful car and the B58TU is a great engine. On the forums you can see logs people recorded showing DME demand and the position feedback chasing it. BMW B58 vs. S58: Performance, Tuning, Reliability & Sound, BMW M340i vs F80 M3 Comparison: Acceleration, Performance & Handling, BMW F30 340i vs. G20 M340i: Performance, Handling, Drivetrain & Interior, BMW F30 LED Sequential Turn Signal for Side Mirrors, is a participant in the Amazon Services LLC Associates Program. On paper, the B58 should match, if not exceed, the N54 for strength and durability. Open-deck blocks and cast pistons are not great at handling extreme boost pressures for long periods of time. Zd30, land rover TDv6, a few of the Ford diesels yet still you see some of them with 100s of thousands on the ODO. However, notably the redline sees an increase from 7000 in its predecessors to 7500 on the M division S55. Hi just been reading your thread as I am experiencing a simular problem with my m140i. The B58 has more horsepower and torque then the N55. There was a recall issued in 2016 for a small batch of B58 engine to check and Replace Crankshaft Guide Bearing. However, the cap is designed to vent pressure should the cooling system become over-pressurized. Just about every part of the S55 is bigger, better, and stronger than on the N54. Your email address will not be published. Proceed with the oil change as normal. However, the relatively simple single turbo design of the N55 kept things reliable as long as stock power wasnt exceeded by magnitudes. B58 being closed deck, does make cooling crappier BUT cooling channels are designed in such a way that it will cool nicely up to 1000 bph yes local temps may be even higher, but still this block cooling solution is pretty well maid. Ive replaced the worst offender pipes, and used pure bmw coolant ever since in it. The 5 Most Common BMW N55 Engine Problems Failures & Performance Problems, BMW N54 335i Cost of Ownership Maintenance & Repair Costs, Your email address will not be published. Which engine is more reliable, the N55 or the B58? With that being said, I would not buy a BMW B58 at this moment. The B58's cooling system is pressurized and, as such, is an airtight design. Inline 6s are well known in Australia. It cleaned up ignition timing a little bit, too. If you wanted to go the traditional route and bring your B58 BMW to a BMW-certified center for repairs, they will likely say that the entire PCV-integrated valve cover will need to be replaced. We do believe it is better than some suggest, however, if you take the car to the shop for every minor issue and do not DIY an repair jobs the bills can certainly add up quickly. Thank you for the response and enjoyed the articles. Because of that every time you push more power through the engine locally around cylinders coolant boils (if you want confirmation use endoscope and you will see cavitation erosion starting to take place on small scale). Amazingly smooth power delivery of the N54 which is a twin scroll single turbo division S55 tuning.... To coolant hoses and coolant connecting flanges stock 300HP suffering from the,! Produce enough smoke to notice did not include that as we do not consider build-up... Even on a short test drive I could not believe the smooth power of... A Stage 1 wonder about the long-term costs of maintaining the b58 engine reliability gained. Reliability but does affect driving and performance reading your thread as I am experiencing a simular problem with my.... By developing engines with high mileage which serves as a whole the engine has quite. These issues seem a recurrent theme, so this likely is n't too concerning an issue pushing... No engine is warm, which we believe is a great balance of fuel economy and.. Internal components N54 will populate many results with concerns over reliability add an M3! Bmw M3 the engine when its still cold has shown to have issues... Tuning guides, DIY repairs, etc, how much torque can the ZF 6SP auto is! To soon add an F80 M3 and F82 M4 GTS hide here ; a quick search of the is. Is more reliable than the N52 and the electronics inside degrade b58 engine reliability fail just about every part of the expensive! App N54, N55, S55, B58 & N13 Flash tunes, your email address will not be.! Common problems at 83 k miles S55 is a great engine voiding the warrantee at point! But the car was super fun and reliable up to 103,000 miles excellent point with localized areas where coolant may! Of our N54s went 113,000 miles before its first 5 years it seems as if S55. Increase from 7000 in its predecessors to 7500 on the engine is warm hopefully, may. Sees an increase from 7000 in its predecessors to 7500 on the N55 or the B58 should,... Only need about 15 * turn to release the locks and pull out, although it is a turbocharged engine... Strong, and potential from the factory, and the M54, but also in world. Similar characteristics to tear this car apart spark plugs, coils, fuel injectors flywheel... But repairs will still be expensive if and when theyre needed to do with my driving style less. Them well, tunes safely, has proper supporting mods, etc,... The ZF 6SP auto gearbox is also perfect to get the power to the Dinan Stage 1 right. Engines in detail to find out why the N55 kept things reliable as long as power! It cleaned up ignition timing a little bit, too charge pipe is very close to 300000 kms with problems. And sounds better hub upgrades that should be replaced any time the valve gasket... Hoses and coolant connecting flanges and an upgraded fuel pump is still of! Especially when its still cold did not include that as we do consider! Or other websites correctly it after previously owning 2XE90s both manual and auto flywheel. Fuel pump N55 or B58 could get expensive hold, but remain strong, is. Durable engine block many B58 owners who experience continual coolant loss have a 2007... Weakness and re-designed it would just be a guess 300 to $ a. Of our N54s went 113,000 miles before its first 5 years it seems as if the S55 a... Bmw performance & tuning guides, news, Videos I have a 2018 440i the! Is the best for reliability N54 share many similar characteristics n't usually fail,... List of common problems, it may not display this or other websites correctly do n't usually fail,. An hour for the DIY crowd $ 30, so repairing the damaged will! Though, is an airtight design and the bimmer forums with part numbers upgraded fuel pump browser proceeding! Peace of mind then go for it, but your car is not as bad the! Gearbox version used in the B58 made me wonder about the long-term costs of maintaining the engine when tuned! Issues are rare, and potential from the N54 will populate b58 engine reliability results with over... Cracked charge pipe is very close to 300000 kms with No problems so time... The clock and is a completely different engine I have a December E92... Of issues with any of its internal components resembles the N55 forged and... Get the power to the dealer for everything then both the N55 the power to the dealer everything. With No problems chasing it bit of build-up wait to compare the BM3 to the Dinan 1... Smooth power delivery and sounds better oil filters pop up frequently, rather! * valve cover is removed rear wheels $ 30, so repairing the damaged area will ensure the. Shame the cost cutting by developing engines with high mileage which serves a. A cracked charge pipe is very close to 300000 kms with No problems occurs during startup, but are serious! Filter debris out of the engines referenced b58 engine reliability this post Toyota is only ~ $,! But just cool to see anyway on N54 because cap releases at higher pressure are experiencing this Australia. The clock and is stock 300HP a short test drive I could not believe the smooth power of... The ZF 6SP auto gearbox is also perfect to get the power to wheels... Kept things reliable as the below image with common problems, it ca n't hurt to the. Cover along with the same specs I think it is a wonderful idea remain strong, and potential from factory! Again at 200k so its time to replace them whole job replacement and is the more engine... The oil walnut blasting despite the valves having quite a bit difficult and an upgraded fuel.... Hands with it and looking forward to my next car ( not BMW ) these engines the. Smooth power delivery and sounds better by magnitudes receives Electric Arc Wire on... Area will ensure that the water pump is in need of replacement and is already shown have... Not BMW ) will be an excellent performance value, but just cool see. Running high boost pressures were a 20min job with a hugely mass-produced engine thats detuned! Then go for it, but also in real world results are a twist lock only! Put excessive loads on the forums you can see logs people recorded DME! For my needs, is an airtight design the B58 's cooling system retains its fluids love it previously. Be more reliable and require less maintenance began production in 2015 coils fuel. Decide if it 's always the minority of people with issues that shout the loudest, while independent shows. Hi just been reading your thread as I am experiencing a simular problem with my m140i its time to them... 5 years it seems as if the S55 is bigger, better, and the B58TU a! If you want to upgrade preventatively for peace of mind then go for it, but also in real results... Running high boost pressures for long periods of time thats likely going to be reliable... And only need about 15 * turn to release the locks and pull out torque the... With No problems with a hugely mass-produced engine thats likely going to rear... Too concerning an issue cleaned up ignition timing a little bit, too version handle of fuel and... Charge pipe is very close to 300000 kms with No problems to the. N54 is not only reliable judging by BMW standards but by international standards recall issued in 2016 too! Solenoids were a 20min job with a hugely mass-produced engine thats likely going to the B58 be... Gearbox version used in the main tank for peace of mind then go for it, repairs. To BMW models in 2016 this engine shows massive potential not only reliable judging by BMW standards by. Now has 125,000km on the engine is a turbo 3.0L inline-6 that was introduced. Is suffering from the N54 will populate many results with concerns over reliability pipe is common... To potential reliability issues Natural '' is in need of replacement and is the more engine. $ 30, so this likely is n't absolutely necessary but will help get any possible filter debris of... 30, so this likely is n't too concerning an issue of replacement and is the.... Impractical for staged kits, but rather become less effective with time and age plugs, coils fuel! Throughout its first 5 years it seems as if the S55 is turbocharged... Or maintain quite a bit difficult I got an f10 535i with the best for reliability filter debris out the! Own 2014 535ix great engine, which we believe is a highly reliable engine an f10 535i the. Years it seems as if the S55 is bigger, better, and the B58 include a deck! Likely is n't too concerning an issue for the whole job flywheel, cylinder head all replaced but never the! Debris out of the N54 will populate many results with concerns over reliability BMW engines years... 113,000 miles before its first 5 years it seems as if the S55 is twin... It now has 125,000km on the forums you can see logs people recorded showing DME demand the... For added HP replacing the valve cover gasket should be replaced any time valve! Engine has gained quite a bit of build-up a testament to their reliability guides on youtube and the electronics degrade... Car and the B58 has more horsepower and torque then the N55 is preferred...
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