Quote:
Originally Posted by SeanWRT
Like M4 base vs. ZCP, anyone thinking ZCP is weaker low down just don't know what they're talking about, or probably didn't ever sit behind the wheels of them at all.
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I think what happened here is that, at some point during the S55 life cycle, BMW reduced the low end torque of the engine on all S55 tune variants. When the M3/4 were first launched, the official BMW rating for torque was 406lb-ft @ 1850-5500rpm, it has since been revised to @2300-5500rpm. Folks that switched from an early base M3/4 to a competition pack felt that reduced low RPM torque, which gave the perception that the Comp Pack was weaker in the low RPM. I certainly felt the difference switching from my 2015 M4 to my 2019 M4cs. However, this becomes a moot point for lap times since the RPM never go that low when a car is properly driven around a track.