I'm wondering if it is possible to write to just the TCM without writing to the ECM at the same time?
If an E series HSV tune became available it would be nice to be able to just write the TCM calibration into my VE Holden to see what improvements it made.
currently i believe it must do a tcm & pcm write since hpt doesnt separate them.
It doesn't have to be perfect, it just needs to be done in two weeks...
A wise man once said "google it"
Did a 2007 Escalade A6, and the pcm is wrote to first, then the tcm. This takes about 1 min 4 sec.
You could leave the engine tune stock & just change the trans tables if you want.
Russ Kemp
Does anyone have a definative answer to my original question?
currently you must do both the tcm & pcm write since hpt doesnt separate them.
It doesn't have to be perfect, it just needs to be done in two weeks...
A wise man once said "google it"
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