Ford Mustang Forum - View Single Post - Improve shift speed of automatic
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post #3 of (permalink) Old 02-05-2016
Jn2_
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IIRC a "Write Entire" should reset the ECM refresh count back to zero so the dealer won't be able to tell whether you flashed an aftermarket tune should you need to bring it in for service. This is something thats done via HPT. Don't know if the little hand tuners write the entire ECM, I believe they only flash the calibration.

But to answer you questions, you need to get the TCM tuned, which can be done using tuning software/hardware as it is all electronic.
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