I also had a P0148 code but that was using a Dr. Performance 110hp chip. It appears to trigger when my CP3 pump can't can't keep the required rail pressure asked.

I had it happen too a long time ago. Went away once I updated the Predator.

Well after 3 years, Revision 9r05 for the U7130 has finally resolved the loping idle. I am no longer afraid to leave my truck idle and have people ask me what's wrong with the truck. I just have to say thanks and good work guys.

Yeah you can leave it plugged in and drive around. I am just trying this out myself and had the thing for 3 years. I just wish they would have some documentation on it and what every option means.

I have the same issues. Have had the programmer for 3 years now. Everytime there is a new revision or I add something to my truck I check to see if the rough idle will go away. It hasn't yet. I don't use it anymore which is unfortunate because the power and throttle response is awesome but my truck ...