Jet Performance 29008S | Engine Control Module (ECM) PROM

Jet Performance Chips offer the most horsepower available for your 1981-1995 GM car, truck or SUV. Add up to 23 horsepower instantly with simple, plug-in installation. Only Jet Performance Chips provide exclusive, full range Dynamic Spectrum Tuning of the air and fuel ratio, ignition advance, transmission and various other parameters. Each program is track and dyno tested to ensure the most possible horsepower and drivability from each application.

• Jet Performance Upgrade Stage 2 Computer Chip
• Each Program Is Track And Dyno Tested
• Jet Performance Upgrade Stage 2 Computer Chip; Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust;
• Offers The Most Horsepower Available
• Provides Exclusive Full Range DST Programming

• 1990-1990 GMC Jimmy
• Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust;CARB E.O. D-234-3
• 1990-1990 GMC C1500
• Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust;CARB E.O. D-234-3 ECM Located Behind Glove Compartment
• 1990-1990 Chevrolet C1500
• Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust;CARB E.O. D-234-3 ECM Located Behind Glove Compartment
• 1990-1990 GMC K1500
• Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust;CARB E.O. D-234-3 ECM Located Behind Glove Compartment
• 1990-1990 Chevrolet Blazer
• Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust;CARB E.O. D-234-3
• 1990-1990 Chevrolet K1500
• Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust;CARB E.O. D-234-3 ECM Located Behind Glove Compartment