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I have a 1999 f150 4.6 that was geared 3.08. I have changed to 3.73 gearing. I have recalibrated my speedometer with a superchips flashcal. Now my transmission shift points seem to be off (shifting to soon). How can I correct the shift points?
I have a 1999 f150 4.6 that was geared 3.08. I have changed to 3.73 gearing. I have recalibrated my speedometer with a superchips flashcal. Now my transmission shift points seem to be off (shifting to soon). How can I correct the shift points?
just curious why you chose such a mild gear change..?
02-25-2018, 09:02 AM
