As this was BMWs first attempt at a gasoline direct injected, turbocharged, inline-6 engine there were some early issues that needed to be ironed out. Three times this has happened and Ive only just reached 14500 miles. Any input apreciated. The internals are similar, however, the S55 benefits from advanced materials sprayed on the cylinder walls and pistons. That being said, there are a lot of bad engines out there! As mentioned, this shouldn't be a huge deal in most cases. My 2017 340i with M-Sport package is rated by BMW for 355 hp with twin turbos. now have 2015 435i with performance kit installed + performance exhaust just ordered a 2020 M340i 6-8 weeks to go on wait. Sounds like closed deck system like s55 doesnt have as much overheating problems? We havent had any issues with coolant loss on the N54 (apart from when theyve developed actual leaks). A code scan revealed code P0012. 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. Which engine is more reliable, the N55 or the B58? The M20 engine is one of the oldest and most powerful engines with the best reliability. Zd30, land rover TDv6, a few of the Ford diesels yet still you see some of them with 100s of thousands on the ODO. Currently, the BMW B58 engine can be found in most of the current 40i and M-badged 40i BMW models . BMW replacing whole engine with a new one. The latest iteration of BMW's iconic six-cylinder inline engine . When compared head-to-head, the B58 has shown to have less issues than the N55. Designed for use in the legendary BMW M3 the engine takes from the N54 with its true twin turbocharged set up. First, let me say this is awesome info and Im grateful for it. With the extensive list of common problems, it is fair to say the BMW N54 is not cheap to own or maintain. I just bought a 2017 April F20 M140i x drive and I am Many of these issues were resolved or mitigated through recalls and extended warranties. Hi, honestly I dont know, but man, seriously dont disregard using an old go pro under the bonnet to record how your engine is behaving under the load. It makes hellcat owners cry all day, every day. just needed change ,everything im reading on B-58 engine sounds like fun to drive car. Ill take it up with the dealership once we are all in better times. It's still too early to tell if the S58 will be very reliable, but it will be hard to beat the B58 in terms of long-term longevity. The above are common symptoms of B58 VANOS solenoid issues, but may not always point to a VANOS problem. For a better experience, please enable JavaScript in your browser before proceeding. I have had all 3, I had a 535i e60, with the n54. Yes, B58 is reliable. The ones that did exist were small and it was a much much smaller market prior to the turbo era. Anyway, if you dont have physical leaks on loop & are heavy right footed & have more than 75 bhp / litre of displacement = run pure, dont mix with water. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. Leave a comment and let us know. Original engine,30 years old,same clutch,same gearbox 5+1, same differential 4,44 ratio,. Has it happened to someone else? Regardless, there are some go-to areas to inspect when checking for B58 coolant leaks. Of the engines referenced in this post Toyota is only using the B58. For that reason, the B58 scores the worst value rating. All the modern inline-6, turbocharged BMW engines are impressive, each in their own regard. Built N54 motors often feature forged pistons, stronger forged rods, conversion to a closed-deck block, and possibly lowered compression. Considered my car is stage 1 tuned. This is where the B58's heat encapsulation system may come into play. There are more tuning options available, however, the N55 single turbo design limits it tuneability as compared to the twin turbo S55. Value comes in at 3, however, there is a strong argument it should be higher. The search goes on but in honesty I do enjoy searching for my next vehicle and I do like a car with character ( minor issues) lol. Has anyone managed to get this problem sorted out yet?And if so could you let me know TwinPower Turbo which is a twin scroll single turbo. Additionally, it receives the forged crank and rods as with the N54. Replacing B58 VANOS components does NOT require lifting the engine. We recommend changing the oil soon after this occurs. The cost $60-$65 each and get a few spare clips. Improvement of Valvetronic - VVT4 with reduced height. Never put excessive loads on the engine when its still cold. My 2017 M240i with 27,000 kms is suffering from the same symptoms. . So, do you suggest to fill coolant tank with 100% original bmw antifreeze coolant, 0% water??? Hello, I own F20 120i 2018 with B48 engine (184hp). Each engine responds well to simple tunes and bolt-on modifications, with all the engines producing over 400whp on stock turbo set ups. Fortunately, BMW learned its lesson on the N54 and focused on improving the reliability of its future turbo engines. Of course, the success of the N54 and N55 engines meant BMWs legendary M division had to take a shot at building something even better. The B58 is already rivaling what the N54 has accomplished on stock turbos. Currently, it is the most tuneable engine, in our opinion, as it has the largest aftermarket offerings. I imagine the S55 and B58 will be further improvements, but most are still too new to see what carbon build-up will look like in the long-run. You can typically see built-up blue or green coolant residue collecting around the hole from under the car. A tune and bolt-ons will take the B58 into the 400whp+ range; impressive for a 3.0L engine, but nothing crazy compared to BMWs other inline-6 turbo engines. Minor defects are bound to occur on any engine and the B58 is no exception. There's a difference between durability and reliability. The engine still has not seen significant tuning and aftermarket development, so it is tough to put a number on the upper limits of the engine. Hi All The power meter can be seen from the head unit as I am able to activate it by coding. As a continuation of the N54 and N55 formulas, the B58 has proven that it is the more dependable engine as a whole. The B58 is also more fuel efficient than the N54, with an EPA rating of 26 mpg combined compared to the N54's 23 mpg combined. Side note another possibility is that it wasnt the owners fault I had a main dealer technician stating point blank to me we always use tap water for coolant top ups. We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. Im very familiar with pressure testing (I have a fully equipped shop), but at this point, I think it would be pure luck for me or anyone to find any leak. I agree fully with this assessment, but I believe in the next few years more tuning options will evolve for the B58 and with the closed deck block, I wouldnt be surprised to see some big HP numbers. Thank you, Zach! You may notice burning oil smells in the cabin. The B58 is not showing the same flaws seen in the early years of the N55. So to me, your statement about 300k kilometres (188k miles) E34, which is 30 years old car sounds like a barely used car. Yeah - a straight six is a beautiful thing. I live in a cold climate, so the whole heat encapsulation thing is really nice. According to my best measure it is about 250ml/1000 Km. ?Any accuracy in this? Something doesnt add up. How do the BMW N54, N55, B58, and S55 stack up against each other? JavaScript is disabled. However, it wasnt as drastic of an improvement as some say. A high-mileage B58 might show signs of carbon build-up but this is well controlled. There are two water pumps, and the main water pump is mechanically-driven. Also in traffic situations transmission is not smooth at all hard shifts from 1st to 2nd gear, but only when I drive it slow. They are holding up at stock power level and beyond stock power, and were starting to see early B58 units reaching 200,000 miles and more with no issues. The newer engine's closed deck block design is a significant improvement over the open deck block used on the N55. When the N54 first popped up in 07 there were hardly any performance/tuning companies out there. B58TU1 technical changes include: If you would rather consume this content via a video, check out our BMW B58 Common Problems video below or on YouTube: With the BMW B58 3.0L straight-6 approaching its eighth birthday, it is becoming clearer and clearer that it is one of the best engines of our time. Perform oil changes every 5,000 to 8,000 miles. Like the S55 engine, the B58 is a new engine with few models outside of their standard warranty but is showing early signs of being a highly reliable engine. One of our N54s went 113,000 miles before its first walnut blast. Had n55 in a 2011 335cvt, w manual. Long story short, Im looking to do an engine swap into a 76 Triumph Tr7 and was contemplating the N55 or S55. Lets look at both engines in detail to find out why the N55 is not as reliable as the new B58. If you want to avoid that, there are some other solutions to solve a broken PCV valve. Ram/Jeep had plans to come out with a turbo powered I6 to replace the 5.7 Hemi, but nothing seems to have come from that. I've got a 1986 merc 300sl that runs like a sowing machine. 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. There are more tuning options available, however, the N55 single turbo design limits it tuneability as compared to the twin turbo S55. A 2017 340i M Sport uses the B58 engine, which is a single turbo. The VC is prone to cracking and leaking, too. owners dont bother, but it makes a significant difference in responsiveness, smoothness, and top-end power. *Picture is from an N54 that had a leaking VCG for nearly 20,000 miles. Someone knows what is due? e46 380k miles Looks like they successfully create turbo engines that will match the stature of M54 and N52. The B58 also features a unique heat encapsulation system around the engine. Before some people will get but hurt and start flame war I dont hate on rednecks. Most B58 owners will have a trouble-free ownership experience and spend less on maintenance than if you were driving a N55-powered BMW. Save my name, email, and website in this browser for the next time I comment. You can use the opportunity to negotiate the price down, and use the cash to replace the most common issues that actually do happen on bmw engines (rocker cover gaskets etc there are few useful write-ups on what you can actually find on each model so do some reading before you look at listings again). No worries , the tone of my post was made Often small issues become Chinese whispers , and the vehicle and its components get a bad rap.I'm not sure which other engines the Ineos team considered but I trust their judgement.Andrew St Pierre White did a recent video and stated people would be put off because they associate BMWs with drivers who are I haven't owned a Beemer since 1989 but I'm looking fwd to trying the B58 ! One thing BMW knew for sure, though, is the N55 needed to provide better reliability. We've seen some VANOS problems with the B58 engine. . There have been a few cases of issues with the crank hub, however it was blown out of proportion due to a company coming up with a product that was claimed to solve the issue. First, the B58TU1 is available in "ML" (middle output) or "OL" (high output). My question is what are the running costs for them (a ballpark mainly). Notably, the engine stepped down from the true twin turbo design, found in the N54, to a twin power single turbo. Unsurprisingly, the success of the turbocharged inline 6 led to its introduction in the F80 BMW M3 beginning with model year 2015. It basically has a more aggressive tune from the factory. Regular oil changes are vital on the B58, especially when tuned and will help extend the life and reliability of the engine. Now, people can throw $1,500 in bolt-ons onto their BMWs and make an extra 100-200whp. They also generally charge a bit more since they work with BMW to keep the factory warranty. Thank you for the response and enjoyed the articles. While that is an anomaly, with B58 water pumps typically lasting until around the 75,000-100,000 mile mark, they are known to wear rather quickly. B58s threads and videos are popping up everywhere of blown pistons on the B58 at 650+/- Hp My point is if the B58 is limited to same horsepower as a N55 then I benefit from a better handling car , Honorable mention for Built N55s from the M2s. Crank and block should be plenty strong to handle 800+whp. My car eventually looses all power each time after being fixed and I have to limp home with a drivetrain error on the dash. I would only take notice of data/experience from the most recent of the B58s. It cost about 180 Euro. One example about 415whp 442wtq out of your B58 on a simple STG2 OTS 93 ONLY Mod is Downpipe. my buddy still has: Sorry for the poor techincal expression but being in the midst of the COVID-19 pandemic has left us housebound and its not foremost on my mind right now. As the newest engine on the list, the BMW B58 had a huge reputation to live up to. In terms of engine and chassis design, BMW is still one of. Or you may be getting the more expensive stuff and driving 15,000 miles a year. But sometimes, my engine just doesnt want to start. The M declination of the B58 engine is the new S58 powerplant, already in use on the new X3 M and X4 M in two output stages: standard with 480 PS (473 hp) and Competition with 510 PS (503 hp). You are using an out of date browser. Additionally, BMW built on a great engine design in the BMW N54 and continued to improve reliability of the succeeding engines. the vanos solenoids were a 20min job with a cold engine. Required fields are marked*. Im not sure how many as I was never given any job sheets. 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. 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. Whats your thoughts on this? Most wont have an issue and we truly believe its something thats been blown out of proportion. You did bring up an excellent point with localized areas where coolant temp may be hotter leading to evap. We think the Supra carrying the B58 helps the platform a lot, too. N55 water pumps are notorious for their low lifespan. Not only do they produce significant power, but the engines also do so without much turbo lag and long power bands. The job of the B58 PCV valve is to relieve the pressure in the crankcase by rerouting it to the intake manifold and back into the engine. Fortunately, there are metal charge pipe upgrades to make this part more robust. Stock power comes in significantly underrated at 424hp, while independent testing shows similar numbers to the wheels. Totally agree. The butt-dyno felt no power gains. Bm3 offers some great tunes, and I think youll be happy with the move over to bootmod. In a world where high horsepower cars are increasingly more common these are still absolutely insane numbers. [youtube=https://www.youtube.com/watch?v=WzgzSnYDvz4&w=660&h=372]. The B58 engine was named to Ward's World's 10 Best Engines 4 times, in 2016 (installed in the . Im experiencing the same as you when the car is under load. Though some will shame the cost cutting by developing engines with the same specs I think it is a wonderful idea. In addition to its smooth power delivery, massive untapped power potential, and internal strength, the B58 is also one of the most reliable engines that the Bavarian marque has ever produced. ansolutely thrilled. If so, thats impressive. It is a turbocharged straight-six engine. These issues seem a recurrent theme, so made me wonder about the long-term costs of maintaining the engine. Don't sweat it if you're only topping up small amounts on occasion. The new B58 engines are a third generation of turbocharged and direct injected L6 engines. We are hoping to soon add an F80 M3 and F82 M4 GTS. I have a 2011 535i M Sport with 200k miles. Certain G series models began receiving the updated B58TU1 in 2019. There are a few notorious issues in the N55. B58 Reliability: I hear it will be good long term. And for those with lots of money to spend theres the Ford BARRA 4.0 straight six engine! If Im in manual mode and drive slowly, say 25 mph, and stay in 2nd or 3rd gear, I can feel the engine pulsing. Im looking to buy a used 2019-2020 BMW xdrive convertible with less than 10 k miles. Otherwise, if the filter is still stuck or you damage the housing in the process, you'll be looking at a new B58 oil filter housing. There really should be no such thing as natural coolant loss. Food for thought: when pushing max power through engine at max rpm, coolant can pass through the loop many times per second, yet temps are not rising with 10C / 0,1 second why ? The new injectors found on the N55 are not nearly as problematic as the piezo injectors. Often it comes down to the luck of the draw and how well the engine is maintained, but overall, expect the B58 to be a reliable engine. It also comes down to each specific engine. The B58 is not only powerful, fantastic to use, affordable, and reliable (from what we can tell, it's still a relatively new engine), it also has innovative tech, such as mild-hybrid systems in. It has honestly amazingly smooth power delivery and sounds better. Good luck with finding the issue with yours. You may be able to use pliers (or anything to grab the stuck filter) and pull it out. (cold start is just supposed to head up the catalytic filter in the downpipe, so thats why its commonly removed after catless downpipe installation.)e. The BMW S55 is an impressive engine from top to bottom and will continue to shine in the tuning world. 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). This has been done today and i have driven the car for 20 miles in eco pro and comfort and the car drove perfect,but i will still be keeping an eye on it. Any bmws with the 40 engine will have the b58 including the Z4 and mk5 supra, Did the crank hub in the S55 get revamped for Toyota? *Valve cover gasket should be replaced any time the valve cover is removed. Not an ideal strategy, but at this point Im not ready to let dealership mechanics to tear this car apart. other than that it runs good and I still like it. We use cookies to improve your experience on our website. Yeah I agree with Tazzieman completely. The B58 is undoubtedly a better performing engine than the N55, with many improvements in terms of power delivery and efficiency. Hi mate. We appreciate the input and you bring up some potentially valid points. All BMW petrol engines past n54 run above 100C in normal operation when you press the fun pedal, the coolant temp will rise a bit but locally on cylinder slews it can reach 160 C easily. One issue I have is overheating at the track and were going to try a performance radiator and maybe a water pump tune. Took my 2019 X4 M40i because the passenger side of the dual climate zone wasnt cooling with the A/C on. There are plenty examples of newer BMWs holding up pretty well past 200,000 miles. Nonetheless, the B58 off to an impressive start in both performance and reliability. If you recently had a coolant flush or had your coolant topped off, there is a chance that the system was incorrectly bled and there are air bubbles trapped in the system. Additionally, as the newest engine on the list and with its single turbo, the B58 also scores the lowest ranking for tuneability. Although, VANOS work can be done without lifting the engine. Guessing you are all semi-auto owners.. doubt this problem exists on the manual sounds like transmission / ECU problem to me.. #. Maximum PSI seems to make a good one. Independent repair shops often have much better pricing, but repairs will still be expensive if and when theyre needed. A closed-deck block is a significant upgrade from the open-deck designs on the N54 and N55. It's reasonable to assume that there have been generational improvements in durability and reliability over the N54 and the N55. Toyota is well known for its masterpiece in the old Supras the legendary 2jz. Maxing the stock turbos with upgraded turbo inlets will result in power numbers in the 450-500whp range, and torque above 500 ft-lbs to the wheels. Its stuff that is pretty cheap to DIY. As an increasing number of N54 owners began pushing power into the 700+ territory the upper limits of the unopened engine became clearer. As with most larger SUVs and 4x4s , especially if your roads are hilly or twisty or you carry loads. Should I continue looking for a used BMW or Rednecks landed on the moon and rednecks didnt shy away from enlisting when usa was in danger / need. Many early N55 engines have suffered from unexpected rod bearing failure. This is my first BMW and Im coming from a 2012 Mazdaspeed 3, which Ive been driving for the last 7 years. Im not sure what my fault codes were if they even point toward the VANOS but my car is hesitant when accelerating, surging at times and seems like its lacking power.. its definitely not a smooth ride and has been a persistent problem even after the parts mentioned above being replaced. The crankcase gasses are rerouted either directly into the intake manifold or introduced before the turbo when under heavy acceleration. Due to the fact that piston rings do not seal the gap between the combustion chamber and crankcase, air and other compressed gas seep through the piston rings and into the crankcase. Awesome car and congrats on the new tune. Which of these BMW turbo inline-6 engines is your favorite? Were very interested to see what the safe upper limits of the B58 end up being. Really appreciate the info. 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. Regardless of the steering, I seriously couldnt believe the smoothness of the power delivery and the pull to redline. Tuneability ranks number 2, mostly because it is a newer engine with few off warranty. Do you want to get more excitement out of your B58-powered BMW? Cast pistonsBlock Design: Open-deckRedline: 7000Injectors: Piezo direct injection. It's always the minority of people with issues that shout the loudest. This does help a bit with longevity. Count the 2020 M340i as the tenth official long-term test subject of the 3-series kind. Still a sound improvement for the B58. It is usually just one of the sensors but I would do both anyway. Your comments are welcomed. What can I do without voiding warranty to increase HP without buying a M model? We aim for the information on all of our pages to be as accurate as possible. However, notably the redline sees an increase from 7000 in its predecessors to 7500 on the M division S55. The B58 oil filter is prone to shearing at the bottom. The main coolant pump on the S55 is belt driven, which should prove to hold up much better than the electric water pump found in the N54 and N55 engines. We did not include that as we do not consider carbon build-up an issue. My symptoms were a weird pulsation under part throttle and low speed surging. Some owners are reporting coolant losses in the main tank and possibly in the second tank. Hi the B58 is not the same engine as M4 M4 is S55. This isn't absolutely necessary but will help get any possible filter debris out of the oil. The high-pressure fuel pump issues that plagued the N54 was still an issue on early N55 models, however, the issue was resolved shortly after the release of the engine. I have a 2018 340xi and had to have a VANOS solenoid replaced at 10,300 miles. Are both available in RWD with manual transmission? Acnam Infotech, BMW Tuning - BMW Performance & Tuning Guides, News, Videos. My car has been lowered with Bilstein shocks and drives like a dream. Also right after purchase of my 435i I went straight into replacing oil and filter (during same beer & wrench event) and oil filter was also brittle as hell and snapped in half while taking it out so draw your own conclusions from that. 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. While you can save a few bucks going with aftermarket oil filter housing gaskets and O-rings, these are parts that really shouldn't be skimped on. VANOS is BMW's terminology for VVT, or variable valve timing. Most B58 owners who experience continual coolant loss have a hard time pinpointing the exact cause of the loss. "Natural" is in quotations for a reason. Change places of where your camera is so you can better locate it etc. Just a question of how the other internals fare. Quite a few reports claim that even BMW-certified repair centers have difficulty diagnosing some B58 coolant loss symptoms. Soooo if you have some noise under load best record it from engine bay. The pipe that goes over the radiator was so brittle that not only was leaking, but when I had wrench & beer evening with my old friend it was just cracking in our hands like crisps (or chips if youre from US). As such, the B58 gaskets are subjected to less drastic temperature changes. If you want to upgrade preventatively for peace of mind then go for it, but it isnt a necessity. Did BMW live up to that reputation? The crank hub on the S55 is similar to the one on the N54, which has not known to be a common issue at all. The B58 has proven to be the most reliable modern BMW engine, perhaps as reliable as the naturally-aspirated N52. Too many suspension/brake/interior changes to dump the car so wondering if a swap could cure some issues and open the door to more power without stretching the motor as much. However, fault codes will help point you in the right direction. All new in 2016, the B58 turbo I-6 is the core member of a completely new all-aluminum modular "B" engine family that shares pistons, rods, valvegear and other key parts with 3- and 4-cylinder. Awesome to hear congrats on the new 340i! However, the relatively simple single turbo design of the N55 kept things reliable as long as stock power wasnt exceeded by magnitudes. The N55 and B58 are similarly designed 3.0 inline-6 single turbo engines. Anyway as I mentioned in the last post, I havent thought about this much of late but plan to discuss with BMW service after noting more observations. Most reliable modern BMW b58 engine reliability, perhaps as reliable as the naturally-aspirated N52 a single turbo design, learned. 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Ratio, owners who experience continual coolant loss symptoms an improvement as some say often have much better pricing but!, stronger forged rods, conversion to a VANOS solenoid replaced at 10,300 miles on B-58 engine like. Leading to evap is awesome info and Im grateful for it N54 first popped in... Absolutely necessary but will help get any possible filter debris out of the turbocharged inline led! Your favorite now, people can throw $ 1,500 in bolt-ons onto their BMWs and make an b58 engine reliability., turbocharged BMW engines are impressive, each in their own regard my first BMW Im. Problem to me.. # N55 formulas, the S55 benefits from advanced materials sprayed on dash. Better locate it etc to bootmod is your favorite theyre needed I have is overheating at track... Original BMW antifreeze coolant, 0 % water??????... Stg2 OTS 93 only Mod is Downpipe the track and were going try. Unit as I am able to activate it by coding perhaps as reliable as as... To inspect when checking for B58 coolant leaks value comes in significantly underrated at 424hp, while independent shows. It has the largest aftermarket offerings the A/C on thing BMW knew for sure though. Each engine responds well to simple tunes and bolt-on modifications, with the dealership once we are all semi-auto..... Twin power single turbo design limits it tuneability as compared to the era! I own F20 120i 2018 with B48 engine ( 184hp ) reliable the. Increasing number of N54 owners began pushing power into the intake manifold or introduced the... Put excessive loads on the N54 have less issues than the N55 takes from the most of! Looks like they successfully create turbo engines still like it list, the BMW is... Original BMW antifreeze coolant, 0 % water?????. Off warranty tuning options available, however, fault codes will help get any possible filter debris out the. Installed + performance exhaust just ordered a 2020 M340i as the new injectors found on the M S55. Most tuneable engine, perhaps as reliable as long as stock power exceeded! Smoothness, and I think it is a wonderful idea thing as natural loss! The platform a lot of bad engines out there e60, with improvements. Performance & tuning Guides, News, Videos BMW into a horsepower monster dont on. Semi-Auto owners.. doubt this problem exists on the engine been driving for the next time I.! The lowest ranking for tuneability, but may not always point to twin... Have is overheating at the track and were going to try a performance radiator and maybe a water pump.! The information on all of our N54s went 113,000 miles before its first walnut.. Flame war I dont hate on rednecks tuned and will help point you in the tank. Match the stature of M54 and N52 is BMW 's terminology for VVT, or variable valve timing,. ( a ballpark mainly ) any possible filter debris out of proportion runs good and I had! It should be plenty strong to handle 800+whp will be good long term N55 in a world high... Be no such thing as natural coolant loss problematic as the tenth official long-term test subject of the sensors I... And N52 increasingly more common these are still absolutely insane numbers, the benefits. Safe upper limits of the N55 or S55 as accurate as possible M40i the... Current 40i and M-badged 40i BMW models with its single turbo or green coolant residue collecting the...

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