I'd like to say hello to everyone, as my first post on this forum!

I was looking at some Yoshimura slip on exhaust and they stated that putting on the exhaust can change the air/fuel ratio on the bike. Is this something that I should correct? Or is it not a big deal, and won't hurt the motor in the long run? I have a 600f4i 2001, i'm sure the question has been asked before, but I couldn't find anything on it, thanks!

 

if it's a slip on it's not a big deal, unless you see fire out the pipe it shouldnt matter much if you get a full system you should grab a power commander III to see any real improvment in your bikes proformance