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400cc
11-01-2008, 10:15 PM
I just installed a full pro circuit t-4 exhaust and the only way it will run is if you choke it all the way and push the start button while holding the gas lever down, but when you let off the gas it just dies and it wont idle either, also while revving it, it backfires.

What size jets do I need to get? My quad also has a aftermarket air filter and holes drilled in the airbox, it also has the stock carb as far as I can tell. Should I go with a dynjet kit or just buy the keihen jets out of dennis kirk? (i think it comes with like 5 jets or something like that)

I also saw moose racing had a dynojet kit in dennis kirk

Any advice would be appreciated

11-01-2008, 11:19 PM
stay away from dynojet kits...go to www.jetsrus.com and read the faq on jets and retting to the left...