FMF Power Core IV and carburetor settings

1 reply to this topic
  • Ingvar

Posted September 21, 2002 - 08:27 AM


i've just installed Power Core IV and have to say
it has very deep loud sound (and maybe
"substantial bottom end power increase" :) - i'll try) - very impressive.
but how did you tune your carburators after
Power Core IV installation? Jets, settings, etc;
richer or leaner?
I'm afraid to overheat the engine.

Thank you a lot.

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  • fershy

Posted September 21, 2002 - 10:43 AM


I used to run an FMF IV on my 99 WR400. It ran beautifullly with stock carburation with only a minor adjustment to the fuel screw. Now my Big Gun exhaust on the same bike, that's another story. I still have not got the jetting right!
PS that FMF was loud but the top end was huge!


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