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Old 09-23-2012, 06:15 PM
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70x7 70x7 is offline
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Same thing happened with my muffler swap.
I attributed the first couple fillups to the foot pedal cause of the sound, but the mpg calculation has consistently shown about 1- 1.5mpg drop and its not cause of the sound anymore since I have purposely let off on the throttle more.
Was getting about 15.5 before and now it hits 14 or just a tad over...
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2008 1500 QC HEMI--
Spectre Intake*Flopro Max Muffler*Superchips Cortex*Bilstien 5100*Pioneer AVH-X7500BT*Magnaflow Ypipe*Viper Alarm*85mm Throttle Body
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