Hi guys.
I have a 2010 kx450 FI and it seems to loose coolant
runs great other than that.
its stock standard other than an FMF muffler.
could it be that the its jetted to lean and running hotter since the
the FMF was installed? it seems to leak out the overflow pipe on the
radiator
do you need to change jetting on a fuel injected bike?

i heard a better radiator cap might help...
any ideas??
thanks in advance