I recently bought a diablo predator for my 03 and havent really decided if im satisfied with it. Sure it gave me a lot more power but it doesnt really offer enough different power levels. Which would be better to try next, the X2 or a smarty? I like the change on the fly of the X2 but havnt really heard that much about how people like it yet.

 

The nice thing on the X2 seems to be you can remove it if you want to go into the dealer.

On the Smarty it is downloaded into the ECU but claims to be undetectable. Many seem to like the Smarty since there are many programs and usb update capability. With the X2 now having usb I think that helps. I chose to go X2 for now.