07-14-2010, 07:05 PM
heres the problem I installed a bran new holley 4v and a edelbrock perfomer intake runs good but i have major backfire out of the exhaust when i let up on the gas ive checked the timing new plugs new wires new vacum lines i thought it was runing rich so i adjusted the mixture screws in as fars as i could so it would still run (2 turns from tight if that makes sense) but still major backfire any advice?
Life is short------drive your bronco everyday!