im even willing to put cats back on. I just want the truck to run correctly. just dont know what to do.

I just bought the new predator. u7198 V9r15 Im trying to get my truck running right but am clueless. I cant put in a custom tune because i dont have the computer cable yet. Seems like it is running rich. Engine is the 6 liter. Cold air intake. Edelbrock headers. True dual exhaust. No cats. All 4 o2 ...