I would like to be able to control the TC lockup. If it stayed locked, you would have much better engine braking. And eliminating the slippage at lower speeds would improve fuel economy and reduce transmission temps. All the power lost due to TC slippage turns into heat. It would nice to reduce those losses.
When running at low speeds (~5-10mpg) in low range climbing hills, my transmission temps quickly shoot up to 225 or more. That can't be good.
Alaska to Key West, Labrador and more
Prostate cancer survivor. See Thread Prostate cancer and Sportsmobiles
2015 VW GTI 2020 Fiat 124 Spider
2012 E250 Hitop camper