Computer Chip Upgrade

CORRECTS SPEEDOMETER/ODOMETER for non-stock tire sizes. Vehicle speedometers are calibrated to stock tire/wheel sizes. If you've opted for a larger wheel/tire package, for higher vehicle clearance or just for aesthetics, or if you've changed your 4x4's gear ratios, then your speedometer and odometer are no longer pinpoint accurate. You may not consider this a critical issue, but try explaining to a trooper that you're speedometer doesn't jive with his radar scanner because you're running oversized tires. You'll still get a speeding ticket.


The primary focus of all the available computer upgrade modules is engine efficiency—the optimum air/fuel mixture. This can (but not necessarily WILL) result in improved fuel economy. Here's one example of some of the parameter changes on a Dodge Cummings Turbo Diesel: an increase of 65 horsepower and an additional 185 lb.-ft. of torque. That's a significant improvement from not doing much more than punching a few computer keys!