i thought there was valve float issues with doing that?
sorry didnt know.:doh:That is a very old wifes tale...
I had that with my SP Diesel controler... And I could run it in any tune I wanted. And I could control my TC lock up and un lock...If you need an exhaust brake why not get a tuner that takes it steps farther? Hitting 1 button and have it all is better than having seperate switches for all the functions the tuner will do. Just my $.02.