Exact same thing happen with me, after installing the CR49 on my truck, sputtering and coughing on any setting above 02. Pulled the railpressure harness and apparently stopped, but a bit concerned regarding what might be happening.

As per their instructions:
"- The rail pressure part of the PowerMaxCR does not currently work on Dodge trucks with a build date of June 2006 or later. TST is working on this problem and will update the program and/or harnesses at no additional cost when we get a fix. In the mean time, do not connect the TST rail pressure harness to the rail pressure sensor, leave the stock harness connected to the rail pressure sensor. - Also, the PowerMaxCR does not currently work on some Dodge trucks with a build date of June 2006 or later even with the TST rail pressure harness not hooked up. Some trucks run rough and some set a P0148 code. TST has stopped shipping PowerMaxCR units for Dodge trucks with a build date of June 2006 or later until the problems have been resolved."

I guess read this a bit too late........

Anyone with new news on TST and June06 onwards Cummins????
Cheers

 

Anyone know any news on the TST and newer engines, it has been a year now.

 

apparently there is a code of some sort that is needed to be acessed in the ECM for the TST to adjust the parameters properly. the TST does not actualy acess the ECM, however from what it sounds like the computer is a bit more advanced than the guys at TST realized for those trucks built after 6/06 and can tell mischief is afoot.

just give them time, they will eventualy resolve the problem, and I am VERY sure they will send you what hardware you need so it will run properly on your truck.

 

dang if you didn't dredge this post up. There's no change. The TST doesn't work on trucks built on or after 6/06. It will fry the engine in "their" words.
They said it works on some truck and doesn't work at all on others. For that reaqson they've quite selling them of those build years. I was lucky that it did work on my truck, just not the RP part. I've since recieved a refund for mine and have moved on. I got the feeling they weren't going to find the problem and are working on the 6.7L box.

 

2.5 hours? You must live on the East side of NC to get to Atl so fast.

 

I'm actually 109 miles away but, because of the mountains it takes that long to get there.

 

Spoke with Mark - TST last night. They are still trying, will not quit, just too many 5.9´s there, and are very close to a solution. I will wait a bit more.

 

well good luck with that. I waited 8 month before giving up. With as quick as they were to refund my money after using the box for 8 month, that told me they weren't any closer to a fix. Plus, one of the big problems they have is they don't have a beta truck to test on.