get the superchips....i've heard some bad things about diable. talk to chris at
www.ctamotorsports.com about the diablo..i believe he's had some major issues with them that he pulled Diablo's out of his line of products.
also - if you have an RJL1 code for an SVT....i haven't had much luck with it. it helps down low, you can tell in the dyno graphs. if i ever get the graphs all lined up correctly, i'll post the dyno graphs.
later.