Thank you...that's very good information.

So, if anyone wanted to use an aftermarket exhaust on that type of F.I. system, you would apparently have to re-program the MAP, or trick the sensors; in both cases to richen the mixture.

Can this be done cheaply? I have no idea.

Alexd


(one) 2006 XT225, (two) 2005 XT225, 2006 FZ1