akrapovic are the best in my opinion, and there dyno developed as well, same goes for yosh pipes as well, blue flame are dyno developed now and the quality of them is about the best there is available. i have a full high mount titanium GP system from a company called MTC exhausts (they are a subsidary of blueflame) and with a remap (as needed with all full X systems) they produce bloody good results. they're cheap as well as they've got no research program as blueflame did it all for them, nice huh. for my money, blueflame, akra and yosh are the best followed closely by the likes of MTC, remus, micron (serpent pipe work is very good though), etc, etc.
if you just want somthing that sounds nice, get a slip on from someone like micron, lots of different styles and colours available and sound nice (road legal too) and not too pricey.
Trick
