9,000 rpm de stroked N55. Brutal sound! Testing the 4N Motorsport 2.6L N55r26 engine!

Testing the 4N Motorsport de stroked N55r26 engine on low boost 17-18psi and low timing in these videos. Now that we’ve gathered data on this engine the next sound clip compilation boost will be turned up to the 25-27psi range!
This has been an absolute blast developing this 2.6L motor. We were stuck for a few months with the mevd17 dme not allowing us to get past 8,000rpm. After working closely with MHD and our tuner we were able to find a solution to this with custom code. The way this engine sounds and pulls is nothing like a normal 3.0L N55. The bottom end changes that we made completely changed the engine’s characteristics and sound. The N55r26 revs out and hits 9K rpm’s freely. This is largely due to the decrease in stroke, longer rods, increased piston dwell time, lower rod angle, and less reciprocating mass. More info will be posted soon on how these changes affected this engine.
We are running this engine with our 4N-EFR8374 GT turbo kit. This is an equal length twin scroll turbo kit that hits full boost at 3,800 rpm’s. Even with the de stroke to 2.6L we are still getting full boost before 4K rpm’s but now have a redline all the way to 9K. The N55r26 9K rpm spec engine provides the rpm and the 4N- EFR tubular turbo kit makes the exhaust note.
#bmw #racing #135i #335 #cars #n55 #performance #engine #n55 #m3 #m2

[@4nmotorsport]

Hey guys! Thanks for all the interest in this engine build from us. It’s awesome to see enthusiasts enjoying high revving road course/ track inspired engine builds on these cars. If you are interested in getting the N55r26 spec engine built, please email us on the website at 4nmotorsport.com For those asking, we can build the 2.6L 9Krpm combo for you across all N5x series engines including the S55 engine. A note for N54 guys, Factory MSD80/81 DME is still restricted on the N54 to 8,200rpms. You would need a standalone like MaxxECU to reach 9K rpms.

[@gosha7673]

is it pointless to do a n52?

[@devonsmith1995]

@@gosha7673the sound on that has to be amazing

[@gosha7673]

N52 2.6 with a supercharger?🧐

[@4nmotorsport]

Would be awesome. Especially with equal length long tube 6-1 headers! We have a turbo kit for the N52 also. Twin scroll tubular equal length manifold!

[@daanixc]

@@4nmotorsportdo you have equal lenght headers for the n54 or n55 models?? and how much is the kit?

[@mgcharoudin]

OH YES PLEASE❤

[@Sulfides]

What the fridge? Misha?

[@alperen194]

omg Mishaaaaa

[@lucalambo01]

No way 😳

[@MikinoYelocity]

Yes! I know its almost impossible to let them drive you this, but Man i really want to see it on the Green Hell!

[@garethwillis]

Should have known😂

[@carcrazyguysa4059]

N55 popularity about to skyrocket because of 4N

[@yasuke1075]

It definitely is, cause now I want a 335i. I will put up with BMW shit for that engine.

[@carcrazyguysa4059]

@@yasuke1075 It's definitely worth it!

[@aaronsmith7143]

I wish the N54/55 platform was more popular. They literally hold roughly the same power with less money than a 2JZ.

[@bonkezz936]

@@yasuke1075 you know this isnt the same n55 that comes in the 335 right

[@hexagonosaurus5848]

​@@aaronsmith7143 they are literally the most popular 6 cyl you dummy 😂 and no a n55 wont hold 2j power no matter what you want to believe 😢

[@charliefrharper]

If a N55 and a RB26 had a baby. Glorious!!

[@thomaslcmt]

Eargasmatic 🎉

[@matl7560]

Baby Godzilla with fast legs..

[@GHenry-et2ix]

NB26

[@giuseppepiodimezza163]

Please make a 10 hours version so i can listen to it while i fall asleep!!! That's pure music to my ears

[@matthijsgerretse3217]

That is JCS kitted 991 GT3 RS levels of eargasm.. what a sound

[@Zeckrom_Gaming]

it does sound like a JCR exhaust, can’t stop hearing it now

[@RiasGremoryS54]

BMW L6 is always >>>>>

[@michalbures859]

That's straight pipe Murcielago level, amazing this little thing...

[@tylercarlson1659]

Goosebumps, the sound alone. Like old school m3 mixed with supra and R34. If only I could fit the bill for the maintenance on a BMW

[@ma-scalia8629]

I just picked up a well maintained 2013 335xi with 155k on the clock. Did an oil change, and have driven 4k miles w no issues. If you do the work by yourself it’s really not so bad

[@MrPanaramuh]

FCPEuro makes maintenance relatively cheap. Buy it once(Belts, oil, filters, coils, spark plugs, etc) and it's a lifetime warranty even on consumables.

[@--...--...--...]

Own a 2011 335xi, and can confirm the two comments prior to me Best piece of advice is know how old your common/major failure point is are, and have money planned to cover things when they need replacement. Other than that, if you like cussing at things, it's not that bad.

[@sa-iu1cc]

@@ma-scalia8629ya ur in for one in abt 5k more miles lol

[@ma-scalia8629]

@@sa-iu1cc I mean I planned on having issues already lol. No stranger to doing my own work, rebuilt my whole e30

[@miguelfigueiredo3910]

Now that's how you record car sounds! No music to drown out that beautiful symphony of the N55 engine especially at 9k rpm! Delicious

[@augustortiz]

I always knew one day people would appreciate N55’s. Even if it meant by a crazy build like this.

[@henryatkinson1479]

The N55 is the best choice for a turbo E9x engine. I love the N54, had one in an 07 335i from new (Euro Delivery, CTO, the lot), and enjoyed it dearly, but the N55 was just as good for street driving and almost as reliable as the N52 - which in my opinion is the best NA 6 BMW ever made.

[@moneyshifters]

@@henryatkinson1479 n52 is slept on.

[@revengeof1307]

@@moneyshifters n series is lowk slept on yeh they have their reliability issues but really hard to hate imo

[@moneyshifters]

@@revengeof1307 you spitting bro. I’m a fan of the n62.

[@mizaqenyad4269]

I dont think anyone "sleeps" on N55s. I remember them being insanely popular before the release of the b58. But now with b58s and S55s being more attainable than they once were i think the N55 is falling out of the spotlight. However now im thinking someone should do this kit to an f87 m2

[@F82_]

This built n55 for an og m2 would be perfect

[@dbs_jd]

I was thinking the same.

[@m8_981]

omfg please

[@Samuelwarman90]

Same 👌 I want one now 😅haha

[@Areku06]

Wow best sounding inline six I’ve heard. N55 is so underrated.

[@MiguelGarcia-vj7oo]

This sounds very similar to the M1 procar M88..... But the M88 still sounds better.

[@2seep]

It sounds exactly like an rb26

[@jamilahmed979]

De-stroking an engine is always exciting. You may lose some mid range torque but u get naturally higher revs with a f1-like high pitched sound. And you could always replace mid range power with appropriate mods and clever tuning.

[@anthony-tl4uz]

This is like a V12... 2JZ... RB26... thing... it sounds amazing. Im so happy

[@Sakkie_S55_M3]

Now take it through a tunnel…. We demand Tunnel action 😂✌🏼

[@Scott_Buchanan]

I would pass out 😂

[@ytcine1742]

WHAT THE F*** i never thought, in any case, that a N55 could sound pretty close to a 911 GT3

[@YouThana]

Very interesting. The N55 is plenty available, comes in a lot of interesting chassis and is also mated to manual transmissions. A very interesting market.

[@xIcarus227]

Holy mother of god the way this sounds. Now I wanna hear a similar version of the S55 and with equal length headers.

[@MeijaJanis]

if i am not mistaken, n55 = single turbo; s55 for sure twin turbo, menaing n55 will always sound better.

[@xIcarus227]

@@MeijaJanis nope, the N55 is twin-turbo. And even so, the difference between single-turbo and twin-turbo is barely noticeable, there are much more important factors which affect sound. The S55 sounds way worse than the N55 for example, and they're both twin-turbo. And the N55 doesn't necessarily sound worse than the B58, which is single-turbo. Finally you can compensate, because like I said there are more important factors when it comes to sound. You've got loads of twin-turbo Mustangs which sound way better than the stock one for example. And the turbo spool sound in itself is something many people love so even if there's a difference it might be worth it.

[@Capz0r]

@@xIcarus227 n54, s55 = 2x mono scroll turbos, n55 1x twin scroll turbo.

[@xIcarus227]

@@Capz0r hmm my bad, it looks like auto-data which I take my info from doesn't have the correct data. The E82 135i is shown as having an N55 and twin-turbo which is impossible since it's a 2007 car (N55 was released in 2009). Thanks for the correction.

[@MeijaJanis]

@@xIcarus227 you are wrong here. N55 uses a twinscroll turbo with a single manifold that feeds all 6 cylinders to 1 turbo. The S55 uses 2 mono scroll turbos that feed each turbo individually. B58 is as well single turbo, hence the better sound. regarding twin turbo mustangs. they are v8`s with aftermarket turbo setup, since there are no such things from factory. each bank has turbo, which means both manifolds and exhausts are identical, so sound is not 'broken' by unequal lenght setup.

I've played this video non stop for the past 4 days.

[@bimmerfan729]

Remember that old KZbin video of that supercharged m3 CSL that's insanely loud and awesome, yeah this is that vibes 100%

[@e46m54nissansr20937]

I know exactly what youre talking about I used to watch that video all the time back i n the day

[@RS-jb1lf]

Wow you just took me on a trip to memory lane 😅

[@R8andGT3Fan]

I watch that from time to time.

[@jacobm2625]

Not supercharged, the screaming you were hearing was the rear diff

[@Dillon000]

Holy fucking shit… This is like legit one of the best sounding cars on the planet! And that is saying more than words can describe! I am in utter awe right now…

[@asc395]

As an n54 owner, this is honestly my favorite thing ive seen done with an n54/n55. Creating and working on something like this is my fucking dream man… i just have no idea where to start.

[@MakeItRayne]

N54's and their evolution into the B58 have been widely referred to as the 'German 2JZ's'. The concept and practice of this is starting to look more like a German RB. Now you just need to find a way to integrate ITB's to complete it.

[@nofront711]

Itbs on a turbo car? How does that make any sense at all.

[@brendanrice6795]

Throttle response? Gtrs do it.... ​@@nofront711

[@mikeysan4]

@@nofront711 Why not?

[@checkyourself164]

@@nofront711 You're very clueless my friend :) RB26 have had ITB's and Twin Turbo's since the 80's. Do some reading before typing!

[@raeshaunroman]

@@nofront711itbs in a manifold? Many cars have bad them not to mention the RB26 that OP was literally talking about.

[@turborocketmedia]

If the "Shut up and take my money!" meme was a car 😎👌🔥

[@mcintosh.motors]

cannot wait to build a 11k rpm s55 with twins for an insane NA linear power band. thank you 4N for continuing to push the limits 🙏

[@alextasarov1341]

I legit thought this was a joke! 😂 it’s gonna be so cool

[@BumpTune8462]

So uhh how did you get rich?

[@BusterChestnuts]

Ain’t no such thing as an S55 with twins that has an insane NA power band

[@fredfrederickson]

@@BusterChestnutsthat’s why he’s building it 🤦‍♂️

[@BusterChestnuts]

@@fredfrederickson No. Perhaps you, or he, don’t understand that you can’t have a naturally aspirated power band in a forced induction powerplant. Twins (turbochargers) automatically mean it is no longer NA. Naturally aspirated (NA) means no turbocharger or supercharger, twins means twin turbochargers; hopefully you can see why the gears don’t mesh here…It’s like saying you’re going to sweep with the vacuum, makes no sense. 🤦‍♂️

[@ugurylmaz144]

OMG. That's the best sounding inline-6 ever! You've created the BEAST!

[@kmannc]

Depending on the cost of this kit, n55 cars will become a hot commodity 😂

[@lukewest708]

Considering the "kit" is a fully built engine with one-off parts I doubt very many n55 owners will be doing it, there's just no reason to spend the time and money throwing what is essentially a road racing engine into a 335i or 135i unless you're actually building a racecar. It does sound amazing though

[@kmannc]

@@lukewest708 From what they have been say its not as intensive as it sounds. Especially for what you're getting. This isn't targeting the regular n54/n55 high hp street racers. Its targeting those that appreciate more motorsport derived motors and can use on track. This motor is becoming popular at the track and its abundantly available for cheap. A lot of the track community isn't prevalent online like the copy/paste, big turbo straight pipe bro youtuber goons, I'm sure theres a bigger market for it than you think.

[@LegendaryDrumr]

​@@kmanncwhen talking about market, you habe to consider what's available and competing with this. Cosidering there's definitely one off parts for this build, it's not coat effective for a large market of people to invest in this. Especially when you can just go get an E46 M3 or take the engine out of one and put in said 135i. Nevermind if aomething breaks and you need to replace it. Still, this is dope.

[@tlalepm]

This is absolutely mental. What?! It sounds glorious. Amazing work guys

[@thesingingtiggs4781]

Those shifts are crisp AF, sounds like a RB when accelerating and sounds like a vq37 when decelerating, awesome.

[@Riceonrice]

Bro it does not sound like a vq37😂😂😂😂

[@thesingingtiggs4781]

​@@Riceonriceat 1:37 he's decelerating and downshifting, at that point specifically it sounds like a vq to me, not at any other point. I think it's more of just a general brahp sorta sound all 6cyl seem to make at that rpm range. My 3.9 magnum in my ram with straight pipes had a similar sound when decelerating under load. A vq is just what popped in my head to compare it to. Overall it sounds much better than a vq

[@miltonpayne9784]

Yeah I can hear the vq sound you referring to

[@Riceonrice]

@@thesingingtiggs4781 kinda bro but i had many g35 and sevens so i dunno

[@ralph02136]

@@thesingingtiggs4781 sounds like a typical modified v6 downshifting, not specifically a vq😂

[@collinmanning8334]

That sounds heavenly

[@wallnuts7]

Been following you guys on instagram, such a badass idea! Car sounds so good and almost like a gt3

[@blainelink8626]

Dude on gawd. Saw it on reels and sent it to my homie all he said was “we have gt3 at home”😂.

[@4nmotorsport]

Appreciate it!!

[@ytcine1742]

the sound is unbelievable

[@MeSs2007]

This might be the best sounding inline 6 I've ever heard. Please do the B58 next.... 😆

[@vanjabi8827]

Well done fellas! This is the sound of Motorsport 👌🏽

[@joebidden4914]

Sounds like a bike! It sounds incredible!

[@danielplumley2649]

This might just be the best sounding BMW (inline 6) of all time. PLEASE make a video on the build and what you did to the engine.

[@paulkline1522]

That sound is an absolute art!

[@hing-kianng5840]

That’s insane! Hope this kit will be released to public soon

[@ChrisMisMYhandle]

Lovely cammed up RB26 you've created there 😍

[@ramadhanisme7]

That distinctive high revving 6 cylinders sound ❤

[@mayonaisesaladejamaismalade]

I need this in my X1 35i IMMIDIATELY. Amazing work as usual 4N!

[@mayonaisesaladejamaismalade]

NVM I just saw the price, twice my cars worth 🤣

[@JacesOwnWorld]

@@mayonaisesaladejamaismalade Where do I find the cost?

[@jmccarsnmore1025]

We need videos on the build!! Parts and everything used for it. It sounds amazing!!

[@babyboilo1289]

Already seen the clips on insta, but this thing is just insane.. never have I thought a BMW Turbo could sound like this

[@e46m54nissansr20937]

Now this is how you turn an N55 to a true ///M engine

[@nathanelliott2894]

I want to see a breakdown video of what they did, this is incredible!

[@ericvermeulen9853]

Well done guys, this is epic 🤩🤩 it sounds like a GT3 RS

[@shaidensmillie2218]

The in car audio sounded absolutely amazing

[@anonymzs]

Daaaamn that’s cool. Excellent shifting too

[@nissejarnet]

Awesome! Sounds similar to a modded RB26 😀

[@kaio37k]

This sounds very much like a little brother of modern F1 engines. Very similar tone, just a bit slower revving and more quieter. Sounds great.

[@Adamk24]

Complete kit when!! I need this to a degree that is impossible to express!! 😮

[@user-si5oy1wq4f]

This the most brutal sound I have ever heared from a bmw.Sounds luke F1 car and porsche GT3 high pitch sound.Please bring this machine over to Europe!

[@Yan1nc]

The noise, WTF, amazing

[@mrcharles2507]

that engine sounds spicy👀👀

[@TenaciousTentacruel]

A second and a half into the video and I am all in. Thumbs UP

[@mynameismyname7469]

new best sounding I6 hands down

[@str8_s6x]

Man I can't wait to see the build breakdown on this baby.

[@whilliamblamet187]

S55 Swapped F87 M2 with this conversion is now the dream

[@ahorton6786]

Oh yes indeed, now that’s a proper sounding motor, amazing!

[@rackscalling]

absolutely mental sound can’t wait for my n55 build

[@nf1369]

This is absolutely incredible. I love how it sounds!

[@gianniarduini3644]

Not only has one of the best sounds ever. He can drive stick really good sounds like a dct shifting .

[@joshuavincent7884]

it's amazing developments like this that reminds us the petrol engine is far from being dead

[@papapetad]

Oh wow...nice pipes. Definitely a little reminiscent of old-school top-tier stroked RB's while being distinct. Congrats :)

[@dekabwerks]

Love this, been following for some time

[@frann949]

1:52 absolutely sick

[@maxly501]

Sounds so great holy shit!! There's that raspy sound like the Euro spec M3 e36 3.2 liters

[@bishop94z]

Sounds amazing 1:27 It’s like an RB26 mixed with a Stuka WW2 plane

[@koketsomnguni3224]

Wait a minute... that sounds unreal ❤

[@Brikzilla]

Oh my days, I'd seriously love to hear what you could do to an already relativity high revving s54

[@mikeh.748]

Yes please. How can’t anyone enjoy that. 😍

[@ImGairBair]

One of the best videos on the internet

[@antecalic8881]

This engine makes this 1 series coupe amazing!

[@Cardioid2035]

Not quite F1 sounding in terms of pitch but it’s impressively close! It sounds absolutely fantastic regardless

[@ericvermeulen9853]

Now imagine this build in a N55 M2😘😍😍😍😍

[@KulebyakMaster]

This sounds amazing. I really didn't expect it. 👍

[@igorczubacki2713]

Beyond amazing, looking forward to see dyno graph low and high boost as mentioned on insta

[@MrSlimeMan01]

I am by no means a bmw guy or even a euro car guy but that thing sounds heavenly, makes me almost want one over a classic v8

[@ggbg88]

Amazing roads with the proper soundtrack

[@annemllerpetersen1929]

My god that's the best sounding N55 EVER!! This is on par with the S65 V8- wich in my humble opinion is one of the best sounding v8's in the world! Great job guys💥💪

[@veldmannn]

I love my 135 n55 DCT, but this sounds mental, what have you created, love it!

[@pierremorrow4627]

6 to 1 ex manifold and single tube exhaust 😍

[@Captain-Donut]

‼️ Sir…that was totally mesmerising ‼️

[@symbioticproductions2591]

I regret selling my F30 335i because of you… time to find another one!

[@cocoboderedu17360]

I would not believe a n55 sounds like this if 4n wasn't there ! Wtf guys that engine sounds amazing ! 😍

[@1heBoy]

What do prices start at? If I were to provide a functioning N55

[@juandontworryaboutit4150]

😮😮 1:23 you can see some flames 🔥 upshift

[@thabangciroc]

Those shifts mean business as well 😮‍💨

[@JeanKatana]

Have put this into my favotites! Exceptionaly sound!!

[@tuurbow]

My brain cannot compute that sound coming from a 1 series. Fuck me, it sounds like it should be coming from a 90's JGTC race car.

[@Skydrag.V60]

I def hear some GT3 in there, but honestly it reminds me of the M88 in Group 5 and Group 4 spec

[@TwoCommaKid]

This is incredible. Would love to see this done with an m235 xdrive

[@R8andGT3Fan]

Can't believe the sound of that thing...dear God. 🤯😍

[@jameswalbridge6081]

This is perfect. The absolute best sounding attainable bmw I've ever heard❤keyword attainable.

[@seanmichaelo9777]

It’s sounds awesome and clearly A lot of work has gone into it. I would be very interested to hear it with a sequential flat shifting, mated to this engine. …..But for what this would cost you could drop a crate built engine in with warranty and go play.

[@I_SPILLED_THE_MILK]

0:55 sounds like a Porsche gt3 shifting

[@BMWarrior1]

this is absolutely amazing! what a build

[@1loumellor51]

That's incredible! awesome work

[@DRUMM3RX7]

F1 vibes! Best sounding inline 6 I’ve ever heard!!

[@carsracing5901]

Wow , what an amazing build

[@m0didit]

Sounds absolutely amazing