to the drivers nowadays, I'm sure were used to the acceleration, but without a doubt you can scare someone in the passenger seat. First you have the noise of the engine that you hear and on top of that, you REALLLY are hauling ass..
2011 E90 ///M3 AW/FR
ACM Exhaust with CF tips, CF splitters, CF mirror caps, OEM Performance CF trunk Spoiler, gloss black side markers and hood vents, AW painted reflectors, matte black kidney grills, OSS-ACM Headlights, ZCP/GTS matte black wheels
Future: tints, RD sport springs, turner test pipes, CF roof vinyl