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we just fired up my buddy's challenger, he swore the wires were right, we put it on a lift, took off the driver side from the header, wld go pow after 5seconds, we took down from the lift, i sd lets look again, we had the #5 and #7 crossed.



When I bought my car, the owner said it had a stubborn backfire through the carb. Been that way for the 5 years he owned it. I think that's one of the reasons he wanted to get rid of it. #4 and #6 were switched...