I bought an S3 yesterday and was wondering whether to keep resonated or not? I only want to go non-resonated if I will get a performance increase!! I could consider a decat and keep the resonated system but only if I get a performance increase e.g. lower EGT and improved flow.
Currently I have a Relentless 3 inch downpipe with a 200 cpi Magnaflow sports cat with a 2.75inch Milltek resonated cat back system and was considering chopping out first baffle and replacing it with a piece of pipe or seeing if anyone whated to exchange the centre section on the cheap e.g. carriage only.
When I had the BAM in my MK3 Golf I had a non-resonated, decatted, Jetex system which was 2.5 inch with a 3 inch downpipe and that sounded fierce on throttle but.......
Though the Audi is more refined I do like the sound on throttle but not the done on the long A roads or motorway.
Anyway thoughts and comments appreciated please?