HOLY COW
Well I got my X-cal 3 from VMP today and all I can say is wow. Currently I have the 87 performance tune loaded in the truck and I am really amazed at the power difference. Tons more power and throttle response throughout the RPM range and the overall driveability is better. I also got the mileage tune and towing tune and will keep everyone posted if I can get the grin off my face long enough to try them.