so i just bought a diablosport predator and i know it comes with a base tune. I only have cai and catback, so how much will a custom tune help compared to the base tune they give me

 

not by a whole lot with a small amount of mods.

 

Get LT's & a mid pipe. A friend (who recently traded in his gt for a diesel truck [sm=boosign.gif]) had TB, Plenum, Cai, Lt's and mid pipe and had his car tuned and pulled a 13.9 out of his *** on street tires. I was impressed.

 

15-20HP with a good tuner.

 

You will go faster from haveing less weight in your pockets. Thats about it.

 

Just buy gears..... I'm mad that I still haven't done it.