Originally Posted by NikB316
Had Dinan XPipe + AA Rear.
Too much drone and headache producing.
Switched to M Perf Rear + ACM Test Pipes.
Excellent. Perfect for this car. Much more exotic and refined sounding than previous setup. This belongs on an M3. Absolutely no drone. Keeps the BMW a BMW and test pipes add the performance.
Hmmmmm..... your signature says:
"AA Signature Cat-Back Exhaust | Dinan High Flow Middle Racing Exhaust | Brembo BBK | Defiv Rear Diff Brace | Volk TE37SL | Vorsteiner CF Front Spoiler, Rear Diffuser II & Boot Lid Gintani CF Side & Rear Skirts | ACM Custom Headlights |"
Originally Posted by Vbcarguy
I went through Active Auto Werks and then went back to my custom electronic controlled system which uses the oem muffler. I can go from loud to stock in 5 seconds. You can also dial in how much sound you want. Why live with drone when you can spend 500 on this set up and have the best of both worlds? Ellwood the pug says why live with a loud exhaust when you have choices!
I have one of those lying around and was contemplating picking up a 2nd for a mod like this, mounting them before the cats, however. Not so much for sound, more for power.