Being new, what is ment by the learning period of tranny when tuned +90 with Quad 2? Towed a car 750 miles last week-end without any trouble. Not hard driving got 15 MPG avg. Any danger of harm to tranny?

thanks

1.you don't mention the trans temp. 2. one car? on a trailer or dolly i'd forget it was back there such a piddly little weight

The highest I noticed tran temp was around 185 but mostly stayed around 165-170. El Camino weight about 4000lbs and was pulled on flat bed. I know that's nothing for this truck but I didn't understand the "learning perion" that I keep reading about. Later after I had already started this post, I did read that even if you go down on your tune later that the tranny would adapt to the new setting.

Do a search on Allison learning. You will find a lot of threads on the subject. The Allison is an adaptive tranny. It will adjust to your driving style. It will be effected by changes in power caused by tuning or addons and also by towing. If you do a lot of heavy towing (or not vey heavy) use T/H mode. That way when you go back to normal driving without the trailer you can turn off T/H and your tranny will act the same way it did before.

When you add a tuner you have 2 options. reset the tranny and go through the relearn process, or just drive it easy for a while and get progressively harder on it. It will take a while for it to get just right. I drove mine around for almost a week back and forth to work until it was shifting good in evey situation.

Like Clayt171 said it is an adaptive transmission. If it has a bad shift (harst or soft) it will make adjustments to the shift pattern on the next same shift same throttle and load conditions so that over the period of a number of shifts it will learn to do smooth limited slippage types of shift. It never stops learning from each and every shift. Even on what you think is a good shift, it remembers and learns what is needed to make a good shift.

Change drivers, load conditions, or driving styles and the trany will set about to learn again, and again, for ever.

Thanks Guys.....Good info