I installed the GDE TCM tune this morning courtesy of a TCM swap with them through the group buy.
First impressions: Very different. It shifts quicker without as much revving in the low gears. Once I got used to it, I like it a lot. It utilizes the low-engine-speed torque much more effectively than the stock tune. The TC now locks up at about 35 mph in third, so you are able to use full effective torque all the way into 5th lockup. Very nice.
The only negative (if it even is a negative) is that the TC unlocking under 35 mph is very noticeable. It clunks, then coasts easier. It's just something that will take getting used to while coasting to a stop.
Overall: another great product from the guys at Green Diesel Engineering. Now I need to replace my TC and get the Hot Tune so I can REALLY utilize the torque in lockup.
