DuckyGt

i have a question i hear about special tunes and stuff if you have longtubes, well what do i need to do? I have a diablo predator right now and just put the diablo tune on it is there any settings i can change on the diablo tuner to help my headers? Am i hurting my car by not having it tuned right?

code3GT

A tune would be beneficial, just to see where you're at.

DuckyGt

so i would need to get custom tune?? can some how download a tune into my predator or something??

2000GT4.6

You need to get on a dyno with a A/F meter and see what your ratio is. They can help you tune it either with the preadator (via download) or better yet have em burn a custom chip for you.

I am not conviced that the preadtor is capable of getting a decent tune on a GT with near or full boltons. You will need a download from diablo to get it perfect, and that sucks as it takes forever and a day to get it right.