OEM RASP PIPE MOD - E46 M3 - High Quality Audio

Stock vs OEM Rasp Pipe Mod
Section 1 of the OEM exhaust has a resonator on one pipe and straight pipe on the other. To reduce the raspiness of the stock exhaust sound, a resonated pipe sourced from another stock OEM exhaust system was installed in place of the straight pipe, leaving both section 1 pipes resonated