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Re: My ears are still ringing
Since you changed from headers to manifolds I would check your plug wires to make sure you have your firing order right...if not it could very well cause a backfire.
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1972 C/30 133" W.B. C&C
1970 GMC 3500 157" W.B. single wheel C&C
Last edited by BLAZERMAN; 04-09-2012 at 11:38 PM.
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