Could it have something to do with the high output motors from 2003 that are different than the standard ones maybe? Not sure if they add more timing from the factory or not

Yes i had a tune loaded. But when i go to downlaod it tells me not supported but when i go to performance tune page the custom tunes page is there and i can download but once i do and start the truck the truck wont rev up past 2000 rpm and cuts out until the engine warms up then it runs perfect. Its ...

I cant get my trinity to show me trans temp. I put it on the lay out and all i get is 0.0 all the time. Is it not supported on my yr truck or am i looking on the wrong pid?

Yes any kind of box that offers just a pressure only setting will work the orher ones besides edge that i can think of would b quadzilla xzillaraider or tst mp8. Just make sure and keep an eye on that rail pressure becuz when i stacked mine with the edge ez on level 3 i got 27000 psi at wot.

Shouldnt need one the trinity already does boost fooling

make sure you have the lastest update on ur predator. next load a tune such as perf or extreme then go to ur computer and download the rkl tune that corresponds with ur calid. for example if ur calid starts with 05 use the 05xxx tunes if it starts with12 use the 12xx, etc. then hook back to your ...

I have a Trinity on my 2003 cummins and when i load the rkl tunes the truck wont rev up past 2000 rpm until it gets to running temp then it runs fine. Also when i try to load a tune it tells me that the tune isnt supported but when i go into the tunes the custom section is there and i can down load ...