BMW M3 E9X 420HP S65B40 MSS60 STAGE 1 + POP AND BANG

BMW M3 E9X 420HP S65B40 MSS60 STAGE 1 + POP AND BANG

Ori: 420HP/400NM

Stage 1: 440HP/430NM

Extra feature: Pop and Bang Loud with Flames (Recommended only on catless exhausts)