DiabloSport doesn't do custom tuning. You need to find a CMR dealer.

And FYI, the lack of cats is costing you serious power. I lost 30hp and 41ft/lbs with the cats missing. Hemis need backpressure and you don't have it.

why would you need backpressure? backpressure is bad. ? from everything i ...

if i use the data logging that is on the diablosport predator could that be used and sent to a cmr custom tuner to make a better tune? and also i have a custom tune now for my truck but i just got long tube headers installed and was told i needed a new custom tune. is that true?

Predator U7137 ...