Originally Posted by paradocs98
Not sure about a vibration right under the floor, but I do notice on cold start (left it intact with the software) that my rear parcel shelf/rear glass rattles for a minute or so now that I have the Dinan midpipe.
Yeah, I too noticed that my "whole" car seems to rumble a lot more, especially when it is started cold. When it is warmed up and idling, I can't tell a difference from when it still had the cats on.
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.