Its just adjusting to the new air flow, thats what happen to mine when I installed a new 75mm TB. Just give it time but if it should go away after about 2 to 3 days. Hope that works
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2004 GT: STOCK
1997 GT: Mods: 180 Degree Thermostat, Flowmaster 2 Chambers, MAC O/R H Pipe, MAC Cold Air Intake w/K&N Filter, 75mm Ported Upper Intake w/ 75mm BBK Throttle Body, Screamin Demon Coils with Livewires
1997 GT: has front end damage still drives FOR SALE
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