GT42R

My TST worked on my 06 for 2 dyno runs and then broke. I made like 60Hp and then when i went for the next run on level 3 my truck started acting funny. I took off the tuner and my truck drove perfectly. When is TST going to fix there 06 boxes.

MOJO1

I called the other day to see about a new one. Right now there on hold trying to get the 6.7 ready,from what i hear it is MEAN! The 5.9 has some problems but they know about it and have a truck there useing to work the problem out. HOPE this helps. J,C,

coolslice

I had one on my 04.5 for about a year. It worked great in the beginning but then eventually my truck would not even run with it on there and it left me stranded. I threw it in the trash and have been boxless every since. Added power is nothing if you can't trust the truck on the road.

jwb600

what month was your truck built? mine was built on 6/06 so im right on the edge of disaster I think. mine basically done the same thing. but I have the R37 (the joe dirt version) nothing special. when it works it runs like no other.

GT42R

I built my truck within the last 6 months. I just got my truck back today because I blew one of my injectors. I used to be on this website with a different name.

jfranklin

did you try calling tst? i find they are very helpfull.. my truck had a problem that i tracked down to a worn through wire on the timming harness of the tst. called them up sent it in and they hooked me up nicely..