new exhaust....jetting corrections
i have just put a very free flow muffler on and i am wondering about air/fuel ratio correction?
it is much more responsive upto 9500rpm but seems reluctant to make power above...it did before. it pops on de-acceleration. and seems a bit lean.
do i need to re-jet or can i correct the air/fuel ratio by other means?
any sugestions would be welcome.