Originally Posted by Andymancos
get rid of the high level can they rob u of power and stick i nice akrapovic full system on and it opens up a whole new world again
Tested that have you???????? I have seen Dyno's of a Micron high level and Yoshi non high level, both just slip-ons, and there was NO difference(2003 injection model). I have also tried an R1 with full system and I am sorry to say, on road riding, I prefer it with the EXUP in place......