I asked about this a while back. I got to run the truck for the first time since it was added, and wow, it sure does a number on hauling it down. Just one issue.

You never know if it will achieve T/C lock-up or not. Sometimes it grabs, other times it just drops off to idle and coasts down like it would without the exhaust brake.

Could it be something is not quite hooked up right, or that the convertor is on its way out? OR maybe we should get a tuner and turn up transmission line pressures or something?

 

just install a TC lockup switch