I am looking for input on upgrading the exhaust on my 06' S4. I am looking at the 2 Bros. C2 flange on canister. I hope to get a tougher sound out of the bike without getting to loud. I don't expect a lot of performance gain. I am also hoping it won't be to hard to keep the bike running smoot. There are only a few maps for the bike and I don't want to spend a lot of money on a piggie back computer system. Any help or advice would be appreciated.
Jay[email protected]
Jay[email protected]