i agree with these guys in that you should get some boltons out of the way and then get the chip so you arent constantly reburning. and i know the streetflight tuning to be the best option for a little more money but the diablo (custom tuned flip-chip) has worked out great for me and i am running a heavily modded 3L hybrid so its up to you based on how extensive you go with your CSVT and how much you are willing to spend.