does anyone have any experience with these and what the best tune would be for my car?

i just got one for free so i might as well use it

 

What do you mean what is the best tune? I have had one before, and felt nothing as far as power goes, but could help adjust other misc. items.

 

ive done predator with my old mustang. it was ok, but limited in its potential. regardless, the best thing you can do is go to a dyno shop once you have a few mods under your hood. many of them will sell their own interfaces based on diablo or SCT tuners

 

well it has things such as when the cooling fans come on, power enrichment, spark etc. it says there's custom tunes that i would be able to find on their website that already have it set for what i would want. it also says i shouldn't mess around with it unless i know exactly what i'm doing, so i'm not gonna put my cars health at risk lol.

 

ok thanks. i'm working on getting headers pretty soon so maybe i'll wait until after that and check it out.