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FMF Power Core IV and carburetor settings

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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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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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