HELP!... BACKFIRE ISSUES
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Joined: Aug 2009
Posts: 30
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From: NORTH JERSEY
Car: 68 CAMARO, 05 VETTE, 90 IROC
Engine: 327,LS2,305TPI
Transmission: TH400,STOCK,5 SPEED
Axle/Gears: 373,STOCK,342
HELP!... BACKFIRE ISSUES
Got a 1990 Iroc, 5 speed manual, TPI, 170,000 miles. Car runs perfect but when I take my foot off the gas the exhaust backfires, only when my foot is off the gas, never does it when my foot is on the gas, has flowmaster 3" exhaust ( catback ) Factory dual cats still on car. It seems to be backfiring by the cats not out of the tailpipe? While I drive I can hear it popping under the passenger seat area? anyone ever have the same issue?
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