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01-24-2003, 07:49 PM
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#1 |
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Registered Member
Join Date: Sep 2002
Location: Boston
Posts: 592
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If I hear little popping noises in the exhaust on deceleration, should I be worried? They're not loud bangs, just little "doof doof" sounds when I'm coasting. The backfires sound like they are coming from the headers rather than the cats. Is it safe to ignore them or is something going to blow apart?
Probably has something to do with me pumping air directly into the back of the heads with no dump valve.
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91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior |
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