The Bully Dog 41104 4-Position Chip for your 1999 Ford 7.3L Powerstroke Manual is a simple and effective performance upgrade. This 4 Position Chip is an easy way to tune your vehicle for fuel mileage and power. By utilizing power levels (0-2), it is possible to attain anywhere from 30-125 hp/tq gains with the top level (3) adjusting for high idle. Tuning your engine has never been easier; this chip delivers all the performance you need while you're on the road. Not legal for sale or use in California on pollution-controlled vehicles. Features: Get Up To 125HP! Adjustable On The Fly Power Levels High-Idle Feature For Cold Weather Power Levels HP Gains 0 30-50HP 1 50-80HP 2 75-125HP 3 High Idle Not available for sale in the state of California Click here to read Emissions Notice.