Service Brakes w/ Retader, Panic Stopping

[CC_Guy]

I used to keep my Jake off unless needed or driving through the mountains. The reason being almost all Jake's left the factory programmed to downshift to 4th gear when activated. I never liked forced downshifting with every Jake activation. Of course, the Jake would only downshift when doing so would not over rev the engine. Still I didn't like it.

If you use your cruise control with the Jake on, the same downshift would occur when the cruise effectively let off the pedal. Again, not to my liking.

A couple years ago I had my local Detroit/Allison shop reprogram the Jake downshift from 4th to 6th. Now I leave my Jake on almost all of the time when I'm on the highway. I know many coaches have been reprogrammed as mine is now. I'm guessing those that leave their Jake on don't have their factory programming.

I wish there was 2 Jake functions. The one I just described and a Jake High function with dowwnshifting tied solely to brake pedal use. In a panic stop it would be great to have Jake High engaged.