Its the crane cams trc2 box the car ran great for 5 months. Then it just started cutting out at 2500 rpm. Ive tried everything if u unplug the ignition box and go back to running stock igniton its runs fine. But not as strong as when the igniton box was working. could it be a faulting box?

 

Sounds like it is bad. Send it back to Crane to be tested.

Rich