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28 Posts
I recently put a Yoshimura Exhaust on my 660 Raptor. After I installed the exhaust and rode around the yard for bit I noticed the header pipes got so hot they were glowing orange. Is this a bad thing?
What type of header was on it before and was it similiar in size...........wasn't sure if i needed to rejet the carb since i took one header pipe off and put another one on. what kind of rejetting do you recomend?
Then I suggest getting #25 pilots and bigger mains..........This is my first modification as far as the engine goes, so everything is stock, pilots,mains, needles, it all the original stuff.