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Discussion Starter #1
2015 Mustang gt, auto trans, stage 1 Whipple Gen 2, Whipple tune.

Had OPG failure, got engine replaced (warranty).

Now trans shifts erratic. Slow to downshift,sometimes late to upshift. When it does downshift, its violent at times. Just not consistent and smooth.

ATF level is fine. Checked three times according to ford specs.

What I found that works: go into Flare program and reset the area where the trans % are. I dont make and adjustments to each gear, just reset. Also, reset the "profile" (CEL gets lit, then have to reve to 4k for it to go off).

Trans now shifts as I remember, smooth and predictable.

Then eventually about a week of driving, it goes back to ####.

Whipple has not responded to numerous inquires, even after they told me to send a datalog (Jeff Tiller). Would not have expected this from whipple customer service. Absolutely no response what so ever. I'm fine with them telling me its my trans, not their tune. Something. Anything.

Does it not seem to be tune issue, not a trans issue?

Is it time for a custom tune?

HELP! :crying2:
 

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Discussion Starter #3

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Discussion Starter #5
Indy2000, I use the whipple data log software. Able to save it, but not able to view it.
 
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