Thinking of getting a Supertrapp external disc Universal exhaust....Anyone seen/heard one of these? How's loudness? Anyone tuned one? How hard were they to get ballpark range power improvement (maybe not optimal, but better than stock) ?
Any reasons NOT to get one? (Besides them being Ugly) ;)
Yeah, cost.
I doubt that it would do much more than reduce weight. Whether it would improve, or reduce, power...well, you'd have to get a good dyno and operator and spend the money to have it tuned.
Back to cost...
If you haven't spend the money on correct springs or a shock...it's definitely a waste of money.