Originally Posted by RPMjunkie
What makes the "tune" argument valid in this sense is the fact that two of the three M3's had a tune and both performed at this dyno on this day with less HP (by 2 HP) than the stock M3 which was +2 HP over my mark. This does not make sense to me on how you can tune an engine in the aftermarket and have near stock levels.
Na vs turbo tunes cannot be compared. No doubt tunes make big power on turbo motors
A tuned 1m is definitely faster than a stock one. Guess the same cant be said for the m3
sucks for the owners of the tuned car