Thread: madd backfire...help!
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Old 04-12-2003, 07:38 PM
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AwwsChwA
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It could be that straight pipe. The cat is designed to catch and convert unburned fuel to hydrocarbons. If you don't have that cat in place, the unburned fuel is travelling down the exhaust piping, getting hot enough to ignite, and *POP*.
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