Originally Posted by ColdList
Manhart, Schnitzer,PP-all running exact same ECU tune. Not a custom in house tune. No one has one. They come form the same source. I have the EXACT tune, downpipes and exhaust on my car. Car is ridiculously fast. Will leave a stock M5 in the dust. Greatest challenge is launch.
Do you have any source for this info? Hartge does a piggyback/stand alone ECU and others do a remap. Obviously different approaches between some tuners...
Hartge is the only tuner that I know of that has done back to back acceleration runs with a proven reduction in time between speeds (the vids are on Youtube).
And why isn't the PP cars trap speed at the 1/4-mile faster than the std. M5?
And why is the PP car 25hp down on the Supersprint car (at the rear wheels)?
(trap speed is a good indicator of power gain whereas ET is a good indicator of launch and grip at the start)