Originally Posted by bmwSC8
Sounds really good. Just out of curiosity, did you consider the other oem exhaust mod (4 perforated pipes)? I'm torn between the two and would really like your opinion.
I think the ACM sound is what I want 70% of the time, but scared it's too loud the 30%. How is it with windows up?
Thanks for the most comprehensive review yet btw
Honestly this is amazing. I can't say enough good things about it. Even with the windows up you hear it and actually feel it. But it's not deafening, it's just right. The perforated pipes from what I remember is not a good idea. I believe it gives you drone. However you should contact the guys at ACM to get the full details since they do the mod. Cold start up is incredible, when driving any touch of the pedal gives you a nice rumble and bass exhaust tone. Zero drone!