i just rejetted my carbs because i got a white bro exhaust and KN air filter..i followed eveything in the Clymers book and in the jet kits instructions and now when i give it some gas the pipes are Red... could it be Rich or lean.. and also it does not back fire but it stutters a lil bit when u rev it too... im thinkin about just taking it somwhere but i want to save money so if anyone has had the same problem or knows how to fix it please any help is appriciated.