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It is very reassuring for me to hear Roman chose the vt1-535 for his own car.
My car already had primary delete and a tune, what kind of gain will I get comparing to a stock car?
I have never seen any 0-100kmh number from supercharged M3. Is it because the gain is mainly for higher rpm high speed run?
Would a vt1-535 keep up with my brother's stock C63 performance pkg? He pulls away from me third gear up even after my tune.
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