Here we go!!! But, $600 ...? I know I said money was not the issue, but...... $600!

From the Whipple site: Got a 4.8, 5.3, 6.0, 8.1 supercharged engine? Want to increase the torque and horsepower of your Whipple Charged engine? Want to firm your shift points? What about recalibrating your speedometer for custom wheels and tires? How about that vehicle speed limiter? Well if you want to modify any of these stock parameters, the Whipple Power Flash is the product for you. Within a few minutes and few keys punched, you’re ready to go. Available for 1999-2003 4.8, 5.3, 6.0 and 8.1 equipped vehicles including the H2 Hummer.