Adding boost to a 12.0 CR motor is risky at best.....maybe 5 psi?
However the same exact DCT tranny that is in the M3 will be in the next M5-6 with its twin turbo V10 with well over 550hp....
2008 E92 M3, MR, DCT, extended BB leather, loaded!
1988 Porsche 928S4, Guards red/Champagne leather
1989 Porsche 928S4 track beast!!!