Originally Posted by Beaver24

Just got my custom tunes this week also. Love it but its not enough lol. I have the 3.55 open differential with 33x13.5" tires. I need to do some other mods to get the power to where I'm satisfied. Don't get me wrong, this gryphon has made a HUGE difference from stock. My next mods in the next few months (if $ holds up) will be Detroit Truetrac differential in the rear, 4.10's and the Dynatech SuperMaxx longtube/cat/ypipe system. After that I think this heavy beast will move pretty good. The shifting is soooo much better with the gryphon. I ordered an 87 and 91 performance tune, and have left it on 91. My city mpg went from around 12 to mid 15's after the tunes.