I had my car tuned with a SRI, DP and 3" catback exhaust and I just switched back to stock exhaust but still have the SRI and DP. Do I need to retune the car?
I am 3 inch catless downpipe, with factory exhaust. Its a pretty good setup imo. Cheap and it does the job.
Im running full race cated DP with oem mid pipe finished of with the injen axel back. Im getting it tuned soon. The car sounds amazing imo and i couldn't be happier. I also have the hasport top and rear motor mount which definitely impacted the sound of the engine.