10-16-2009, 12:41 PM
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| Junior Member
Join Date: Aug 2009 Location: NORTH JERSEY
Posts: 30
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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