View Full Version : FMF header
Codyhonda400ex
06-30-2010, 10:56 AM
what will a fmf header do to my 03 400ex. will it make it faster or louder.
mikecancu812
07-01-2010, 11:55 AM
I had the fmf powerbomb header with powercore 4 pipe on my raptor. Didn't make it faster but it really woke the bottom end up on it. Lots more low end power. And yes it was louder.
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