i have a problem with my 03 954. any help would be really appreciated. i had a stupid idea to cut of my mid pipe and do a custom gp exhaust but now the bike is slow as **** at low rpm. and now my question is .
- if i get a power commander can i fix this???
- with a pc3 can i map the bike for any exhaust ( can i do it my self or do i have to go to the service) because i know some exhausts come with special maps so i was wondering how do i find a map for my exhaust??
- also i don't know why but my tech gauge arrow is always jumping , even when i keep the rpm steady the ******* arrow goes crazy. i have no f idea why.

thanks a lot guys