Originally Posted by Sully1Time
Our M3s have very little sound proofing, especially in the trunk. The plastic tray for the air compressor & fix-a-flat is all that separates the trunk from the exhaust. The Akra slip-on is quiet compared to most of the other exhaust available, If you want it loud you should try a Gintani Race.
+1 on Gintani Race
I have it with a AA X-pipe catless
JZB,6MT, My mods 360 Forged 20inch wheels,VF650 Supercharger,SPEC Super Twin Disk Clutch,Hamann CF roof spoiler,H&R springs,CF grills,Hamann rear trunk spoiler,Hamann Side Skirts, ARKYM full CF bumper, Gintani Race exhaust, AA X-pipe catless,RPI scoops,AA SSK, Arkym CF Double Sided Vented Hood,Arkym CF rear Diffuser