Got my xcal 2 + C&L from Evolution for my 2006 GT.

The difference is INCREDIBLE!!!! Not only is there a noticeable improvement in power but the throttle response has improved dramatically as well.

I have also noticed an improvement in fuel mileage which easily offsets the price of the 93 octane fuel.

Fred was exceptionally helpful and patient and made shipping a breeze.

I highly recommend doing business with Evolution. You will not be disappointed.

Thanks!