Originally Posted by CBMWF1Y
What custom exhaust set up do you have? I have been looking in to doing the same exact set up! Please let me know! Also, have you dynoed it with the upgrades?
I have the Magnaflow 14816 mufflers, and the Magnaflow x pipe. My local exhaust shop did all the custom piping and everything. My custom x pipe has 4 resonators and has turner test pipes, as well. I used some math and had helmholtz chambers made to eliminate the drone. The car sounds stock at 65+ MPH on the highway. I am very, very pleased with it.
2008 (07/08) E92 M3 BPM Stage II Tuned by Mike Benvo, 6MT, Turner Test Pipes, Magnaflow Custom Catback Exhaust (Magnaflow X Pipe, secondary cat delete, Aero Resonators and Helmholtz Chambers),Vorsteiner CF Lip, Hamann Style CF rear diffuser, CF Rear Decklid Spoiler, BMW Performance Kidney Grills, CF Side Grills, OEM GTS Wheels, K&N Drop-In Filter, GP Thunder 8k Angel Eyes, Painted Reflectors.