Just as an FYI, the point of this video was NOT to bag on the N55. As an owner of an N55 BMW and someone who greatly prefers it over the N54, I made this video to explain some of the hardware limitations that users encounter frequently which hinder power gains. Turbo & fueling being the two biggest factors from everything I have read, thankfully there are solutions to both of those :)

As an N55 owner, I prefer the reliability over the power gains of an n54. I’m really not drag racing every commute so anything between 400-450 is just good enough for the car.

Here you go. N54 has forged crank and rods w/ cast iron pistons N55 has cast crank, rod, and pistons. Only the x4 m40i and m2 n55's have forged everything, and larger factory turbo. They even share the same forged rods as the s55. Both engines are open deck. All variants of n54 and n55 can make the same hp/tq unopened with bolt ons. N55 cast internals have been proven to hold up to the same power numbers as the n54. Both stock rods fail at 700tq, including s55. The punchines/"more power" feel of the n54 comes from the true twins, simply because they move more air. You will not get into big power numbers with twins, you have to do a single conversion. N54's also sound more crappy not only because of the twin turbo setup, but because of the true dual exhaust. You can clean up the sound by opting for a single pipe setup with or w/o resonators like the a80 supras. You can get an even better sound after pairing it with a single turbo. N55 has the single already but a true dual exhaust. Go single and you'll hear an even cleaner/more aggressive "2j" sound. In order to gain big power from either of these engines you have to close the deck and rebuild it with thicker forged pistons/rods/arp ardware. This is the same formula with open deck honda engines. The only closed deck inline 6 blocks are the s55 and b58. B58 is the strongest stock block because the cyl walls are coated similar to the GTR VR38. 1000hp n54/55 blocks have to be converted. The only differences in limitations between the two is R&D. Since the n54 has been on the market for longer, there are more complete kits and aftermarket support for them. DocRace, RK, and Motive are arguably the leaders in the development of parts and tuning. DocRace has a top mount n55 kit available, Turner Motorsport has a better looking engine cover (because the oem n55's one are ugly, all that's left for the cool looking factor is a front face intake manifold. DocRace will probably be the first to make that too. Once the n55 equipped BMW's drop lower in price and R&D reaches the same time as n54, you're going to see the community shift.

i still prefer n55 it sound better and i don’t need a 1000 whp to be happy

My buddies with N54s are always broken down. They've driven my 2014 F30 N55, stage 2 Bootmod3, are blown away by how fast it is. I'm in Medical sales and drive it all over Arizona, have around 50k miles on it with all my mods/tune. Never had a single problem with it, just your basic maintenance.

N55 engine is super solid, I have a 15’ 335 performance edition stage 2 and let me tell you, this thing fly’s . I keep up with stock m3 /m4 & c63s...

I want to see the different variants.

I prefer the sound of the n55 over the n54 and b58. The Power with MHD Stage 2+ is enough and daily usable

It is EASIER and Cheaper to make power on an N54, but it is ludicrous to think you can't make high power on an N55 which is an all improved version of the N54, that gave birth to the S55 on the M3/M4... I had both and can tell you the N55's torque is unmatched by the N54 in stock form or even when you tune both with MHD and stock turbos. The N55 is a better engine period, just like the B58 is better than the N55..

I had a 2009 335 Tune and FBO and now 2013 335, tune and full fatback exhaust. From my experience, the n54 is a powerful and fun engine, gaining so much power from simple bolt ons. However, I did have many issue including high pressure fuel pump going bad, and turbo issue. I traded it for the 2013 before hitting 100k. The n55 is a lot smoother, but not as fast as the n54 with similar tunes. No issues so far and I am hitting 75k. I can see that car going more than 100k without problems. N54 is best but be prepared for unreliability and headaches

I'm running a custom map on my 435i with upgraded FMIC and DP and managed to get around 490hp and 780nm with stock turbo and HP-LPFP. Really happy with the result and no problems with the engine even with now 180k km on it. A really great engine if you maintain it right.

I got my M-packaged 08' 135i right when they came out, and sold it for my 15' M235i. Both first and only owner of the cars. Pretty much fell on the floor laughing when you mentioned the N54's advanced fuel system/pumps. BMW owned up to its issue, and slapped 120k mile warranty on N54's fuel pumps, so I respect them for that. Nevertheless, I was at about my 6th fuel pump by the time I got the M235i. Such a headache.

Please make a video about the different n55 variants I didn’t know that was a thinf

Do the variant video. I'm very interested to hear about the M2 noncompetition model.

Good info we need to investigate the n55 more for it's capabilities over the n54 seems easier to tune with MHD and for the basic builder that's all we need

I own a 13' pre-July (if you know you know) F30 335i Sedan and my car was in the middle of the development stage. It's PWG. They switched to EWG in July. The wastegate difference alone will allow EWGs to be able to take 20-40 more hp more than a PWG car would. They also had the DME locked until May (dont' quote me on this) of 2013. HUGE differences that people don't realize until they start modding their cars.

Where to find tuning parts for this engine

Yes, please make a video about n55 variants. Many of these variants are almost different engines

Hey bro I’m looking at a 2007 335i coupe that’s a manual and has 118k on it. The price is $6500 obo... what would you say? Buy it or keep looking? Thanks

So is there a difference between the n55 e90 variant then the f30’s as I’m stage 2 fbo in my 2011 bmw 335i and it seems to be that the stock f30’s can still keep up how come that is can anyone explain?

Sick video dude. Extremely informational. More videos on N55 plz

Is there a difference in turbo lag between them?

How much is the most I can get out of my f30 n55 and that the engine is safe?

What remapping software/hardware did you use for the N55?

So if u have FBO done will the horsepower increase be the same in both engines or will the n55 make less power ?

The point of twin scroll is for faster spool up of the turbo.

Earlier version of N55 came with same continental style HPFP as N54 HPFP... how do I know, I got one.

i’ve heard of some guys trying to retrofit the S55’s dual HPFP setup but i think it’s pretty costly

Yeah I'm pretty close to the limit with my stage 2+ 400awhp n55 but you really don't need more power for a daily, since upgrading from stage 1 I rarely go WOT from a stop anymore cuz it gets up to 60 pretty quick at 3.7 sec and I still get to make my friend jelly that his brand new m340i won't beat my little F32 lol -Edit: I'm pretty much at the limit without doing major drivetrain upgrades, F Chassis AWD can't handle that much HP stock

Have you raced Gios current car/setup yet with your current car settup? I think it would be a good race.

Just incase anyone visits this. N54 never came with forged internals, maybe crank... but the rods and pistons was debunked on bimmer post. From what I'm understanding, it's literally the twin turbos

N55 with fmic and stage 2 mhd tune can produce up to 370 HP. That's what I'm looking to do with my 335i hopefully by winter

As someone who came from buying 1000$ shitboxes like old civics and fords with 0-60 in yes seconds, i was absolutely perplexed when i got to do a test drive on an f30 335i xdrive... its a whole other world going from sub 100hp cars to something with 300hp... i couldn't fathom what i had experienced and immediatly bought the car.. it didnt take long before i started to venture into mods. i'm not a mechanic by any means, but working on my own cars and doing maintenance is something i've always done since i ever had my first car. i never had this joy of buying parts online before, and installing them myself.. that's when i found out about flash tuning and again, changed what i really thought cars where capable of.. after installing a blow off, intake, intercooler, charge pipes, and fuel components, i went straight for a downpipe and got a mhd stage 2+.. i'm certain the car feels like it has around 450whp and i feel like i can gap any car or supercar (just that greatness feeling lmao) and honestly i absolutely love the damn thing.. its sharp, fast and nimble.. more than what i need, more than whats needed to even drive on the streets... its something i take pride in, coming from shitboxes to something i built by my own hands and makes me feel tremendously happy.. no joke, building this car in months it took, eased off on my depression, and driving it like a hoon is it's own experience to cure it.. we dont need 1000hp big turbo cars like everyone on youtube or social media is doing.. just find a good platform, mod it and tune it to your taste.. drive like you stole it (responsibly) and have fun, with the 300 or 400hp that the car has.. it's way more than enough. cheers

I love the N55, it's full of torque and sounds amazing, I just gotta drive a B58 car to decide between a 435i or 440i 🤔

Did you get an engine code from the burger intake? Suggestions?

in my situation does the bmw 2013 528i have a n55 or n54? what years are mainly n55

I'd like to know different changes they made for the N55 compared to other N55 as you were saying at the beginning of the vid

love going back and watching these videos, such good knowledge to refresh on every so often

N55 sounds amazing though.

Does the N55 in the M2 have the same crank hub problem? I am thinking of buying one for track days and perhaps doing a few bolt on's, nothing crazy maybe 400+

Spool performance has a HPFP in beta rn my buddy has it wasn’t as pricey as xdi I think

So what about the 2011+ E82 135 N55’s?

306hp slow? The heck

Variants please! I have a 2011 n55 and I'm curious.

You mentioned only the EWG N55’s vs N54’s but forgot about PWG N55’s like in a late model e82 135i or e90 335i when talking about fueling. The short on our systems is the LPFP, which is already a stronger system than the EWG cars. Just like the N54, the PWG N55 HPFP is the stronger of the two N55’s, and most of the time is good for E60 blends without port injection. Plus a bonus is that it’s way cheaper to upgrade a LPFP than a HPFP! (Unless you factor in having to replace it around 120k if you’re outside of their class action lawsuit timeline for the HPFP)😉

Yo can you make a vid on the s55 crank hub problem?

I have a bit of confusion here. Don’t s54 owners go single turbo for big power? The shop in Nashville 2 years ago specialized in that. Isn’t it the same reason people ditch the twin RB for a big single RB?

N54 is legendary ❤️👍👍

What you’re saying about the twin scroll is kinda off, a twin scroll is actually better than a twin because how it works is it dynamically adjusts at different RPM’s one gate is larger than the other so you get appropriate boost throughout the rpms.

i wonder if my 2015 335i msport ewg has a forged crank?

I had a 14' N55 in a 335i - had the dealer install the Dinan stage 2 tune. Within 1000 miles it was in the dealer countless times with issues. Went into limp mode x times, blew the intake pipe twice. Needles to say I traded the car soon after was just a headache.

awesome video!! thanks!!!

With the mods applied to this n55 what’s the top speed?

@Simply Car Things feel free to share those information!

Please make a video on the different variants of the n55 engine

Got an N55B30 in a 2016 M235i I bought new. At 53K miles have had zero issues with anything.

Only problem I’ve had with my 2016 f22 is offer putting the JB4 tube on it is that it eats through charge pipe I’m in my 3rd in less than a year (it was fine stock) and I’m hoping to get an aluminum one instead.

I think it was the first time ever i actually smashed the like button and subscribed lol

12 years and 196000 kms and my n54 is still going strong making 407 whp and i give it hell... only thing i changed is my injectors to index 12. Original hpfp, original turbos bit of rattle tho, original water pump. Full bolt ons of course and custom tune water methanol injection.. still not bad for a old motor. Long live the mighty N54.

idk but I’m getting an n55 with this 335i and I’m only looking to make 400whp as a daily tbh

I mean if it ain’t bound to make enough power there is always testing the limit but don’t expect reliability riding it out like that 😂

A twin scroll miminc a sequential twin turbo. I belive n54 are parallel turbo setup. So not exactly the same feeling. N55 would be way more linear for the same total output. Thus faster.

I love the way you rock side to side, it feels like we are dancing

If you don’t think you the N55 isn’t capable …. A. You don’t have money. B. You don’t know what you’re talking about. You can literally can upgrade an N55 to a closed deck.

Alpina still makes their B3/B4 by taking N55 and putting Mitsubishi turbos from N54 (+ forged crankshaft, larger intercooler, NGK spark plugs, aplina ECU and TCU flash). So current Alpina B3/B4 is basically a N55 + N54 turbos, it makes 440hp and it's a stock car with all warranties

I’m in the process of buying a 135i N55 having come from a Chevy Cruze with a blown head gasket and I’m sure the N55 will blow my mind. the exhausting pursuit of the “best version” of a bargain sports car feels pointless. The N55 may not be as “tunable” as some other model, but it does have that fancy screen and swanky rotary dial at a price that I can afford. That alone is worth way more to me than the ability to get more power out of expensive bolt on parts that I would never use to begin with because it would void my warranty anyway.

e92 335i n55 is the perfect balance. you get the reliability and power without the newer n55 limitations

Good video Omar your car is awesome 😎

This is no longer true we broke 1000 hp boys

N54 vs N55 blown WAY out of proportion. So N54 makes a little more power on stock turbo. Ok. N55 maxed out stock turbo still fast af compared to other cars. Then, just turbo upgrade the N55 if you want ultimate power. 🤷🏼‍♂️

Perfectly happy with my n55 m2

N55 with the ZF 8 speed. That ZF transmission is incredibly quick. Even stock. Throw an XHP flash tune on it and that car will be/feel like a little rocket. My wife owns a m235 and it’s the most funnest car to drive, she won’t let me tune it but for some reason I enjoy driving it A LOT more than my full bolt E90 335i making 450WHp. Sometimes I feel that it’s just as quick. Wish she’d let me full bolt on it I could only imagine how fun yours is bro

I think BMW figured out that you can get a N54 335i, put some money and take over some E9X M3s. So they built their N55 so you can’t take over their F8X M3/M4. Now, explain N55 differences between E and F chassis. Even their down pipes are different!!

I have a 2011 E82, with full bolt ons meth, and stage 1 turbo, I did 414 hp and 522 tq on a dyno but that was in the summer heat of Texas so it was heat soaked so I think it would've hit about 450 hp

Omar lets go to the next meet and vlog from there lol

Stock Turbo (EWG) N55's are running mid 11's. 99% of custom single turbo N54 cars are 11 second cars so how much more hp an N54 can make doesn't mean shit really. After 13 years there are still only a handful of N54's running 9's and barely. And there are not many 10 second N54's either when you consider how many were built.

I have a 2018 M2. I'll be testing the B58 HDP6 fuel pump on stage 2 before going for the big boost/PS2

Omars the best for comin down to san diego and replacing my stock shit mirror caps with some nice carbon fiber

Bro that autoclub Speedway brings bag memories

My 2011 E92 335i (N55) makes 400Whp with bolt ons, stock turbo and 93 octane at 16-18 PSI.

You can make 700 stock block on the newer n55s no problem

N54 forged rods and crank, N55 doesnt. and I do believe the the N54 block pistons sleeves are stronger as well

How do you afford this

N55 does sound good though.

I’m hitting near 500whp on my f21 m135i n55 and I can have it more up than this. They do over 650whp on these engines without internals. All the n54 55 b58 all need big changes to make great power, a turbo upgrade and hpfp the right fuel and bingo they all do it. They get to certain point and all will break and need internals for big big power

N55 is reliable but why go N55 when the new B58 makes more power and also seems to be reliable? Edit: Also yes please do a video on all the N55 variants!!

You must not heard of "@1StockF30" on Instagram Aka the N55 King....

It's full bot on, what exactly is FBO on this car?

E82 and E9X debuted in europe in 2004 and the N54 debuted in 2006! thats why the pre lci cars in 2007 have a different chime because thats the chime from 04-07!

The wheels on your car are gorgeous. I like them more than the M2 wheels.

It’s all personal preference here and sometimes not being all that fast makes sense I mean bmw is all about refined power I don’t think brute force was bound to change that 😂

EWG can handle 650 on stock block, Wheel power. same as the B58

E series PWG n55s can hold more E85 (E50) than EWG (E30) cars stock.

The reliability and sound of the n55 far outweighs the HP difference. Most people don't mod and try to squeeze out every ounce of hp from the turbos when they buy car anyway.

Have you ever came across "Fuel Supply drivetrain malfunction", i need to fix my car :/

Been seeing a lot of n55 guys have rod bearing issues lately

Can you make 500 who on a n55 Reliably

N55 is a reliable and simple n54 that uses better tech to get same outcome with less. If you don’t mind everything breaking and you want over 600 whp then go ahead

You can retrofit the b58 HPFP for pretty cheap if you find them used under $500 or brand new for $1000. Also Spool Performance is coming out with a HPFP for the f series n55 for under $1000 and beta testing already looks promising. The release of the pump is said to be a few weeks away can't wait 🤗

I like your vids, very informative. I kinda feel like I’m at a doctors office that is actually listening. I know that doesn’t make any sense to anyone other than me lol.