[LJ30]

The TQ and HP curves are so flat its almost like BMW cut of the rest of the power in the upper RPMs

Would be interesting to see how this compares to a stock Gen 2.

[MM70]

Originally Posted by LJ30

The TQ and HP curves are so flat its almost like BMW cut of the rest of the power in the upper RPMs

Would be interesting to see how this compares to a stock Gen 2.

Is the engine in my '25 M440 Gen 3?

[jdog7811]

Originally Posted by MM70

Is the engine in my '25 M440 Gen 3?

Yes, same as my 25' m240.

[G22b58]

Does the "CF: STD" on the print out mean that the values are compensated with some standard assumption of transmission losses to show the engine output?

[smeal4128]

Assuming the is to the crank and not wheels?

[panki_86]

Stock 2020 (build january 2020) M340i xDrive. European version with OPF/GPF.
Not mild hybrid.

[MM70]

Originally Posted by panki_86

Stock 2020 (build january 2020) M340i xDrive. European version with OPF/GPF.
Not mild hybrid.

What is OPF/GPF?

[panki_86]

Originally Posted by MM70

What is OPF/GPF?

Otto Particle Filter/Octane Particle Filter/Gasoline Particle Filter.

In Europe we need to have it to reach European emission standards.
Stupid thing, just preventing engine to brathe and mute exhaust sound

I understand to have DPF (Diesel Particle Filter) on diesel cars, but OPF/GPS on gasoline cars is non-sense.

[MM70]

Originally Posted by panki_86

Stock 2020 (build january 2020) M340i xDrive. European version with OPF/GPF.
Not mild hybrid.

Looks like there are four runs and you achieved 400+ HP. What's the difference in the two patterns?

[G22b58]

Originally Posted by MM70

Looks like there are four runs and you achieved 400+ HP. What's the difference in the two patterns?

In panki_86 plot (of 2 runs) it seems to be clear that a drive train efficiency of 92% were used to calculate from measured wheel power to the plotted engine output. (Not clear to me if the 92% DE was measured or assumed.)

[dba1t]

Originally Posted by LJ30

The TQ and HP curves are so flat its almost like BMW cut of the rest of the power in the upper RPMs

Would be interesting to see how this compares to a stock Gen 2.

BMW is definitely regulating the power of the B58TU2 to maintain a flat curve. Too bad they are not raising the ceiling to 429 HP/420 lb. ft. as in the Supra Final Edition. Would be nice if it was a factory software update option.

[panki_86]

Originally Posted by MM70

Looks like there are four runs and you achieved 400+ HP. What's the difference in the two patterns?

I don't remember, that was in 2021 But car was 100% stock under warranty then.

[possiblyRZ]

LJ30 thanks for posting! Are these wheel or crank numbers?

[Info@mad-us.com]

Originally Posted by jdog7811

Yes, same as my 25' m240.

From what i've seen the 2025 240 still retains the the older style b58 downpipe.

[inevitab1e]

Originally Posted by jdog7811

Yes, same as my 25' m240.

The '25 M240i should still have the Gen 2 B58.

[inevitab1e]

Originally Posted by MM70

Is the engine in my '25 M440 Gen 3?

It should be Gen 2

[Elderado82]

As inevitab1e stated the '25 M240i has the TU1 B58 (Gen2) but I'm pretty sure the '25 M440i has the TU2 B58 (Gen3).

[inevitab1e]

Originally Posted by Elderado82

As inevitab1e stated the '25 M240i has the TU1 B58 (Gen2) but I'm pretty sure the '25 M440i has the TU2 B58 (Gen3).

The '25 M440i is the Gen 2.
At least according to the wiki it is.
https://en.wikipedia.org/wiki/BMW_B58

[MM70]

Originally Posted by Elderado82

As inevitab1e stated the '25 M240i has the TU1 B58 (Gen2) but I'm pretty sure the '25 M440i has the TU2 B58 (Gen3).

I have a '25 M440 and it's Gen 3, B58 TU2