Excessive backfire problem
02-04-2009, 06:55 PM
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Staging Lane
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Join Date: Sep 2007
Location: Beaufort, SC
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Excessive backfire problem I have a '00 ls1 that for the past week has backfired about 4 times. Each time is while I am decelerating in a low gear between 4500 down to 3k rpms. It finally blew apart the band clamp for my header/y-pipe and blew the y-pipe off the right header last night. Fixed that today. Does anyone know what might be causing this excessive backfiring.
