[JK-M5]

Recently approached a Company regarding the stage 2 package for the F90 and the guy is telling me 800bhp.

Question is, whats changed with these Engines over the previous F10 platform to be pushing these figures?

Quote was only $4000 fitted, thats crazy power for the cost

[MpowerMike]

Full bolt on f90 m5 will get you close to 800hp with exhaust , catless downpipes, intakes and a good stage 2 tune. But for 4K I don’t think it’s doable.

[Fuel-It!]

The engine is more or less similar to the F10 M5. It's the AWD chassis that is really performing allowing low 10 second runs tuning only. I think around 700-725awhp is a reasonable expectation as far as power goes maxing out the factory turbos.

[MWcoupe]

Originally Posted by MpowerMike

Full bolt on f90 m5 will get you close to 800hp with exhaust , catless downpipes, intakes and a good stage 2 tune. But for 4K I don’t think it’s doable.

4K is about right. There's $500 down pipes online now. Bms Intake for $500 stage 2 tunes are anywhere north of $1500

[josec70]

Boom ...

[TrevorM3]

regardless of those "changes" from the f10, the motor imo, still needs supporting mods. You can tell any tuner to turn the power up to wherever you please, but dont plan on going out every night trying to hurt feelings. Because without supporting modifications to hold that power, your wallet is going to be the only thing hurting.

[limeypride]

Originally Posted by Fuel-It!

The engine is more or less similar to the F10 M5. It's the AWD chassis that is really performing allowing low 10 second runs tuning only. I think around 700-725awhp is a reasonable expectation as far as power goes maxing out the factory turbos.

Good guess.



That said, how is 700+ AWHP *not* roughly 800 crank HP per the original question. Even conservative drivetrain loss at 10% equates to almost perfect math.

[limeypride]

Originally Posted by Fuel-It!

The engine is more or less similar to the F10 M5. It's the AWD chassis that is really performing allowing low 10 second runs tuning only. I think around 700-725awhp is a reasonable expectation as far as power goes maxing out the factory turbos.

I'd love to see you argue that position to the BMW engineers that slogged their guts out modifying the S63TU into what we have now. I've read the whitepapers and the changes in words are small, but the effect isn't.

I owned 3 x F10 M5s, 2 x F06 M6 GCs and 1 x F<whatever it was> X5M and, at 10,000 miles in, my F90 Comp doesn't resemble any of them... and it's more than merely the transmission. Atop that list sits the seat-of-the-pants feel and the dyno'd power figures.

[bm5bullit]

Given my experience with the modding of the F10, especially the tuning by reputable tuners, it is easy to see why the dyno charts look the way they do on the F90. The main problem with the F10 tunes is that the torque and HP curves were almost all in by 2500 to 3000 rpm which always placed a great deal of stress on all components. By dialing back the torque especially, it seems to me that the AWD is allowed to do its work and get the car rolling fast.

I am sure that the BMW engineers also beefed up any weak spots in the engine itself to just cover themselves. I am sure that the years of head to head comparisons to the competition also puts the heat on BMW to produce a car that can compete or beat them.

[MuffinFlavored]

Originally Posted by Fuel-It!

The engine is more or less similar to the F10 M5. It's the AWD chassis that is really performing allowing low 10 second runs tuning only. I think around 700-725awhp is a reasonable expectation as far as power goes maxing out the factory turbos.

Does it make sense to upgrade turbos without upgrading other components as well?

[MuffinFlavored]

Originally Posted by TrevorM3

regardless of those "changes" from the f10, the motor imo, still needs supporting mods. You can tell any tuner to turn the power up to wherever you please, but dont plan on going out every night trying to hurt feelings. Because without supporting modifications to hold that power, your wallet is going to be the only thing hurting.

> supporting mods

pistons / rod / block / driveshaft, or something else?

[TrevorM3]

Originally Posted by MuffinFlavored

> supporting mods

pistons / rod / block / driveshaft, or something else?

yes. i'll put it this way, if i were to flash a car, i'm going all out to do it right. I've seen way too many people eat shit.


But in reality, i'll do a piggyback and if something happens, so be it. I'm not looking to break records with a 4200lb car. It just doesn't make sense to me.

[MpowerMike]

Originally Posted by MWcoupe

4K is about right. There's $500 down pipes online now. Bms Intake for $500 stage 2 tunes are anywhere north of $1500

Full catless $500 downpipes ?!?!? Where lol

[MWcoupe]

Originally Posted by MpowerMike

Full catless $500 downpipes ?!?!? Where lol

Just lower down pipes. That's where you make the power anyways

[Vic55]

Originally Posted by MWcoupe

Just lower down pipes. That's where you make the power anyways

On the F90, the lowers add more sound- its the uppers that add the power.

[MWcoupe]

Originally Posted by Vic55

On the F90, the lowers add more sound- its the uppers that add the power.

What I meant is you can run stage 2 tune with just lower so there goes the additional power over not being able to run stage 2.

[F90BSM5]

Originally Posted by Mboy

Recently approached a Company regarding the stage 2 package for the F90 and the guy is telling me 800bhp.

Question is, whats changed with these Engines over the previous F10 platform to be pushing these figures?

Quote was only $4000 fitted, thats crazy power for the cost

Idk, that's on the very high end of things. Someone mentioned that we are not trying to hurt feelings with a 4200 lb car and that's so true. I just want a reliable car that's going to run great over a period of time and still be able to use it as a daily or every other day lol. You can always crank up the boost and any tuner can do that, but definitely playing with fire at that point. Done a ton of research and pistons, rods, bearings are pretty much the same as the F10 platform which then answers all our questions whoever has had the F10 and done work to it knows the limitations. The 700-720 range is a happy place in my opinion, of course given that a reputable tuner has tuned the car and knows how to distribute the right amount of boost and torque throughout the gear ratios.