Shift points after gear change
Thread Starter
Junior Member
Joined: Feb 2018
Posts: 1
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Shift points after gear change
I have a 1999 f150 4.6 that was geared 3.08. I have changed gearing to 3.73. I have recalibrated the speedometer with a superchips flashcal. My shift points seem to be off now (shifting too soon). How could this be corrected?
Senior Member
Joined: Aug 2013
Posts: 1,243
Likes: 149
From: Gulfport MS
You may need to unhook negative battery cable for 30 minutes. To relearn your new gears and shift points.