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Old 02-11-2011, 11:34 PM
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twr twr is offline
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Join Date: Jul 2009
Location: ontario
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Default Re: Air intake and exhaust help gas mileage?

Hi if you changed the tire size [diameter] from stock size [diameter] the speedo and the odometer will not be reading correct and the trans will not be shifting the way it should either. The instrument panel cluster (IPC). displays the vehicle speed as determined by the ECM. You need to have it reprogramed with the correct tire diameter then it will give the correct odometer and speedo and trans shifting. Also after the reprograming is done that will make your milage computer correct. The dealer can reprogram it or it can be done with some hand held programmers like Daiblo sport or superchips. Hope this helps.
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Last edited by twr : 02-11-2011 at 11:46 PM.
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