Quick acceleration off the line, faster 0-60 times and more towing power is yours with the Jet Performance Module. This performance module installs easy, is 50-state street legal, and works for both stock and modified powerplants. Plus, Jet backs this module with a 1-year warranty.
Crush the dyno and dominate the streets with the Unichip Performance Chip. This Unichip in-line module piggybacks your vehicle's ECU to unleash hordes of hidden power and torque. Tuned for stock and modified vehicles. 1-year warranty.
Not sure which 2003 Ford Mustang In-Line Modules are right for you? We have over 1502 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"Pretty good buy. Chip works pretty good. Stiffer acceleration and smoother gear shifts" —Joseph A from Ormond Beach, FL bought a Jet Performance Module for a 2003 Ford Mustang, Automatic, 3.8L V6.