Ford Mustang Forum - View Single Post - rear end gear help and opinions
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post #6 of (permalink) Old 11-11-2013
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cl60pilot's Avatar
Joined: Oct 2011
Location: Easton
Posts: 21
Hey Ltngdrvr,
Ford service area rep says if I didn't get 3.31 from factory (Performance Pac) it can't be programed. Do you know a way? I have a programmer if need be but I would like stock tune to work when I trade it in.

I have a ""surge" 2nd to 3rd, drops rpm then flares rpm, just before shift.

The nice Lady rep said there may be a warranty issue because of the gear swap. I explaned to her that it has been to the dealer twice for this problem before I changed the gears. The dealer saw the problem but had no idea how to correct it. They up-dated PCM program and said "Try it and see how it does" No change

2013 Premium Black Auto.
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