[Chris1337]

What is the max amount of power you can run safely on an n55? Not trying to blast the internals clean out of the block but I wanna be able to run hard.

If anyone has any experience with this let me know

[E92n55slo]

500-550 seems to be the safe reliable, 600s for n55 seems to be iffy

[Ozzie335i]

What bolt ons do you have Chris? And as the mechanic in the desert town says when your car is DOA, "How much you got?"

> 500 at the wheels requires some serious, and expensive, hardware.

[Xdrive35i2014]

You will need meth or E85 to get to 500 whp++. On pump, probably 430 whp?

[WeekendWarriorz]

Pure stage 2 you can push 500-550ish with e85/meth. My buddy has the bigboostusa 3.4 turbo kit doing 600-650+whp on his 135i stock motor, but the DCT is built. VVT is supposedly coming out with a single turbo kit that should be ~600+ hp. No one has really found the limitations of the N55 as the current turbo options available aren't hitting 700+whp like n54.

[Chris1337]

Originally Posted by Ozzie335i

What bolt ons do you have Chris? And as the mechanic in the desert town says when your car is DOA, "How much you got?"

> 500 at the wheels requires some serious, and expensive, hardware.

Full bolt ons with a stage 2 fuel pump
~400 whp and 460 rwtq

[Chris1337]

Originally Posted by Xdrive35i2014

You will need meth or E85 to get to 500 whp++. On pump, probably 430 whp?

Will be running full either. Got a station near my house

[Johnny_Bravo]

Lot's of great information in this thread, can anyone school a newb on what's the weak point in the engine keeping it from hitting 500+??

[cranelec]

FUEL:Of sufficient quality and quantity

Originally Posted by Johnny_Bravo

Lot's of great information in this thread, can anyone school a newb on what's the weak point in the engine keeping it from hitting 500+??

Despite owning and personally bolting on everything that makes what the majority of N55 enthusiasts would consider my efforts almost FBO (i.e. PS2 turbo, PS2 Inlet, VRSF C#tless Down Pipe, VRSF Lower Charge Pipe, VRSF 7" FMIC, VRSF Turbo Outlet, GoFastBits Diverter valve, BMS Catch Can, Injen Performance Intake, N20 TMAP, Wedge 93 Pump Gas custom tune, I did not install a meth kit or upgraded fuel delivery system capable of delivering enough E85 to support 500 hp. In other words, getting enough power containing fuel to the N55 is the limiting factor.

Arguably & despite the added weight of my all wheel drive...the addition of a port injected methanol kit, a tankful of race gas, and a Wedge Custom tune should enable me to make close to 500 whp. However, without forged internals, I don't think my car would be a dd for very long.

[LoneWolfPistol]

id say personally touching 500 would be an achievement without running into fueling problems etc.. Right now in FL me and my guy are working on a few custom maps for three n55s. We're still in the dyno stages but are almost complete.

[C2YT]

Simplev33

How are you and "your guy" tuning cars when just the other week you were asking for a free custom tune? LOL

I am curious as to what you could come up with that others have not.

If you are really trying to measure any real gains you should have a baseline dyno of your car stock on the same dyno that you are tuning on.

[9krpmrx8]

If you want to run hard and make serious power then shit is going to break. If you want reliability then don't look to make serious power. Twisted is/was tuning an N55 that was around 750WHP on a built engine.

[orteeze]

Originally Posted by C2YT

Simplev33

How are you and "your guy" tuning cars when just the other week you were asking for a free custom tune? LOL

I am curious as to what you could come up with that others have not.

If you are really trying to measure any real gains you should have a baseline dyno of your car stock on the same dyno that you are tuning on.

He took that custom toon and tooned every N55 in FL.

CTRL+C

CTRL+V

[LoneWolfPistol]

Originally Posted by orteeze

He took that custom toon and tooned every N55 in FL.

CTRL+C

CTRL+V

" How are you and "your guy" tuning cars when just the other week you were asking for a free custom tune? LOL

I am curious as to what you could come up with that others have not.

If you are really trying to measure any real gains you should have a baseline dyno of your car stock on the same dyno that you are tuning on. "

First of all Captain Troll (and I do use that heavily) I was not searching for a free tune as im sure your still confused by that thread I created not last week but actually on the 14th of September so that leaves about 25 days for events in my life to change ( i.e: Finding a tuner, Running on the same dyno multiple times, plus "custom maps". So do me and yourself a favor and stay in your lanes and let us FL bmw guys help each other out.

You reach out or see others reach out for help but do you try or give them what they need? No you troll posts and play it cool for +1s REP

[Chris1337]

The power won't be the issue just don't need my m3 diff or my internals turning into spaghetti

[cranelec]

Originally Posted by Simplev33

" How are you and "your guy" tuning cars when just the other week you were asking for a free custom tune? LOL

I am curious as to what you could come up with that others have not.

If you are really trying to measure any real gains you should have a baseline dyno of your car stock on the same dyno that you are tuning on. "

First of all Captain Troll (and I do use that heavily) I was not searching for a [COLOR="Red"]free[/COLOR] tune as im sure your still confused by that thread I created not [COLOR="Red"]last week[/COLOR] but actually on the [COLOR="Red"]14th[/COLOR] of [COLOR="Red"]September[/COLOR] so that leaves about 25 days for events in my life to change ( i.e: Finding a tuner, Running on the same dyno multiple times, plus "custom maps". So do me and yourself a favor and stay in your lanes and let us FL bmw guys help each other out.

You reach out or see others reach out for help but do you try or give them what they need? No you troll posts and play it cool for +1s REP

...wow! I wasted a helluva a lot of time reading posts submitted by members whose join date/knowledge exceeded my own N55 understanding until my eyes bled. There is a certain irony equating/referring to orteeze as Captain Troll? (148 vs 1). Out of curiosity, are you considered a Major or General in the FL N55 Tuning Regiment?

[Chris1337]

Stop bitching in my thread lol

[cranelec]

Originally Posted by Chris1337

Stop bitching in my thread lol

Forgive my "after-bitching" in your post!🤭 I've benefited much more from this forum than my relative N55 knowledge/experience allows me to pay back.
As I read through your initial post, I sensed an opportunity to pay back/forward the e90post community based on my almost FBO experience(s). During my "Nightmare on JackStands," orteeze reached out via pm with experiential guidance and encouragement.
Sorry OP, it was never my intent to derail your thread.
Mike

[Johnny_Bravo]

Originally Posted by cranelec

FUEL:Of sufficient quality and quantity

Despite owning and personally bolting on everything that makes what the majority of N55 enthusiasts would consider my efforts almost FBO (i.e. PS2 turbo, PS2 Inlet, VRSF C#tless Down Pipe, VRSF Lower Charge Pipe, VRSF 7" FMIC, VRSF Turbo Outlet, GoFastBits Diverter valve, BMS Catch Can, Injen Performance Intake, N20 TMAP, Wedge 93 Pump Gas custom tune, I did not install a meth kit or upgraded fuel delivery system capable of delivering enough E85 to support 500 hp. In other words, getting enough power containing fuel to the N55 is the limiting factor.

Arguably & despite the added weight of my all wheel drive...the addition of a port injected methanol kit, a tankful of race gas, and a Wedge Custom tune should enable me to make close to 500 whp. However, without forged internals, I don't think my car would be a dd for very long.

Thanks for sharing this. So I guess in a nutshell if you want to come close to 500whp, you are going to need forged internals, and aftermarket fuel system running E85, or some sort of Meth kit, and custom tuning?

Is the stock turbo able to handle this, or is it time to go bigger at that point?

[Xdrive35i2014]

Originally Posted by Johnny_Bravo

Thanks for sharing this. So I guess in a nutshell if you want to come close to 500whp, you are going to need forged internals, and aftermarket fuel system running E85, or some sort of Meth kit, and custom tuning?

Is the stock turbo able to handle this, or is it time to go bigger at that point?

You will need after market fueling system running meth and E85 to get to 500whp full stop. My personal experience with the PS2 turbo on crappy Canadian gas allowed me to dyno at around 365 awhp on a mustang dyno with a baseline of 270awhp. I have been told I can hit 420-450whp on pump only with a Speedtech stage 3 but who knows if that is realistic?

You may not need forged internal if the tuner knows what he is doing. Ie. not requesting full torque at 2k rpm. If torque and boost ramp up is nice and gentle, the stock motor should be fine.

The stock turbo runs out of its efficiency range beyond 15PSI especially at the higher rpms. If you wish to run higher PSI or to have the car pulls till red line, go for a bigger turbo.

[Johnny_Bravo]

Originally Posted by Xdrive35i2014

You will need after market fueling system running meth and E85 to get to 500whp full stop.

You may not need forged internal if the tuner knows what he is doing. Ie. not requesting full torque at 2k rpm. If torque and boost ramp up is nice and gentle, the stock motor should be fine.

The stock turbo runs out of its efficiency range beyond 15PSI especially at the higher rpms. If you wish to run higher PSI or to have the car pulls till red line, go for a bigger turbo.

Forgive me cause I'm still a newb here to BMW's, but not cars in general. So just to make sure, if I was shooting for the 500 mark, I would need to run E85 and a meth kit as well full time?

Living in Nevada we suck and only have 91 Octane.

[Xdrive35i2014]

Originally Posted by Johnny_Bravo

Forgive me cause I'm still a newb here to BMW's, but not cars in general. So just to make sure, if I was shooting for the 500 mark, I would need to run E85 and a meth kit as well full time?

Living in Nevada we suck and only have 91 Octane.

Pretty much man.