I have a Banks CAI, ported throttlebody, shortie headers, Magnaflow cat-back and a Diablo Preditor. The Preditor is being replaced, but theres nothing wrong with them, you can still make adjustments yourself after installing one of there tunes, 87 or 93 octane. I think its the best bang for the buck. You can get them from MarylandSpeed.com for $279.00 shipped. You can data log with the Preditor and then get a custom tune from diablew.com. You can see the Banks CAI in my lastest photo album.