1991 GMC C2500 Performance Chips

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1-20 of 82 Results

1-20 of 82 Results
  1. JET Stage 1 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The modules will work to truly optimize your air/fuel ratio, spark timing, transmission tuning and a variety of other parameters for maximized horsepower and torque! They are available in 2 different styles : Stage 1 is designed to work with original stock engines, while Stage 2 is designed to work with modified motors with performance air intakes, headers or exhaust systems already installed. The modules are 50-state legal and are backed by a Lifetime Warranty. Free shipping to all of USA!

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 5.0L V8 GAS / Automatic Trans

    $123.74
  2. JET Stage 2 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The modules will work to truly optimize your air/fuel ratio, spark timing, transmission tuning and a variety of other parameters for maximized horsepower and torque! They are available in 2 different styles : Stage 1 is designed to work with original stock engines, while Stage 2 is designed to work with modified motors with performance air intakes, headers or exhaust systems already installed. The modules are 50-state legal and are backed by a Lifetime Warranty. Free shipping to all of USA!

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 5.0L V8 GAS / Automatic Trans

    $131.21
  3. JET 6 Pack Performance Chips will work to maximize your vehicle's performance, by giving you gains in horsepower and torque! Free shipping to all of USA!

    Key Features:
    • 6 Pak Chip Computer Chip
    • 50 State Legal

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 5.0L V8 GAS

    $242.96
  4. JET Stage 1 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The modules will work to truly optimize your air/fuel ratio, spark timing, transmission tuning and a variety of other parameters for maximized horsepower and torque! They are available in 2 different styles : Stage 1 is designed to work with original stock engines, while Stage 2 is designed to work with modified motors with performance air intakes, headers or exhaust systems already installed. The modules are 50-state legal and are backed by a Lifetime Warranty. Free shipping to all of USA!

    Key Features:
    • Jet Performance Upgrade Stage 1 Computer Chip
    • 50 State Legal

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 5.7L V8 GAS

    $123.74
  5. JET Stage 2 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The modules will work to truly optimize your air/fuel ratio, spark timing, transmission tuning and a variety of other parameters for maximized horsepower and torque! They are available in 2 different styles : Stage 1 is designed to work with original stock engines, while Stage 2 is designed to work with modified motors with performance air intakes, headers or exhaust systems already installed. The modules are 50-state legal and are backed by a Lifetime Warranty. Free shipping to all of USA!

    Key Features:
    • Jet Performance Upgrade Stage 2 Computer Chip
    • 50 State Legal
    • Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 5.7L V8 GAS

    $131.21
  6. JET Stage 2 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The modules will work to truly optimize your air/fuel ratio, spark timing, transmission tuning and a variety of other parameters for maximized horsepower and torque! They are available in 2 different styles : Stage 1 is designed to work with original stock engines, while Stage 2 is designed to work with modified motors with performance air intakes, headers or exhaust systems already installed. The modules are 50-state legal and are backed by a Lifetime Warranty. Free shipping to all of USA!

    Key Features:
    • Jet Performance Upgrade Stage 2 Computer Chip
    • 50 State Legal
    • Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 5.7L V8 GAS

    $163.46
  7. JET Stage 1 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The modules will work to truly optimize your air/fuel ratio, spark timing, transmission tuning and a variety of other parameters for maximized horsepower and torque! They are available in 2 different styles : Stage 1 is designed to work with original stock engines, while Stage 2 is designed to work with modified motors with performance air intakes, headers or exhaust systems already installed. The modules are 50-state legal and are backed by a Lifetime Warranty. Free shipping to all of USA!

    Key Features:
    • Jet Performance Upgrade Stage 1 Computer Chip
    • 50 State Legal

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 5.7L V8 GAS

    $123.74
  8. JET Stage 2 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The modules will work to truly optimize your air/fuel ratio, spark timing, transmission tuning and a variety of other parameters for maximized horsepower and torque! They are available in 2 different styles : Stage 1 is designed to work with original stock engines, while Stage 2 is designed to work with modified motors with performance air intakes, headers or exhaust systems already installed. The modules are 50-state legal and are backed by a Lifetime Warranty. Free shipping to all of USA!

    Key Features:
    • Jet Performance Upgrade Stage 2 Computer Chip
    • 50 State Legal
    • Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 5.7L V8 GAS

    $131.21
  9. JET 6 Pack Performance Chips will work to maximize your vehicle's performance, by giving you gains in horsepower and torque! Free shipping to all of USA!

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 7.4L V8 GAS / Automatic Trans

    $257.16
  10. JET Power-Shift Computer Chips/Modules combine a Stage 2 chip/module with a very aggressive transmission program, which makes them ideal for modified vehicles with low-restriction exhausts and lower-temperature thermostats. The modules are programmed to deliver peak power increases under hard throttle conditions, including towing and wide-open throttle. They feature a complete range of DST programming of the air/fuel ratio, ignition advance, and transmission. The modules have all been track and dyno-tested to guarantee superior power gains without adversely affecting your vehicle's drivability. Free shipping to all of USA!

    Key Features:
    • Jet Power-Shift Computer Chip
    • 4.10 And 4.56 Rear Axle Gear Ratio
    • 50 State Legal

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 7.4L V8 GAS / Automatic Trans

    $194.96
  11. JET Stage 2 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The modules will work to truly optimize your air/fuel ratio, spark timing, transmission tuning and a variety of other parameters for maximized horsepower and torque! They are available in 2 different styles : Stage 1 is designed to work with original stock engines, while Stage 2 is designed to work with modified motors with performance air intakes, headers or exhaust systems already installed. The modules are 50-state legal and are backed by a Lifetime Warranty. Free shipping to all of USA!

    Key Features:
    • Jet Performance Upgrade Stage 2 Computer Chip
    • 4.10 And 4.56 Rear Axle Gear Ratio
    • 50 State Legal
    • Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 7.4L V8 GAS / Automatic Trans

    $163.46
  12. JET Stage 1 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The modules will work to truly optimize your air/fuel ratio, spark timing, transmission tuning and a variety of other parameters for maximized horsepower and torque! They are available in 2 different styles : Stage 1 is designed to work with original stock engines, while Stage 2 is designed to work with modified motors with performance air intakes, headers or exhaust systems already installed. The modules are 50-state legal and are backed by a Lifetime Warranty. Free shipping to all of USA!

    Key Features:
    • Jet Performance Upgrade Stage 1 Computer Chip
    • 50 State Legal

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 4.3L V6 GAS

    $123.74
  13. JET Stage 2 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The modules will work to truly optimize your air/fuel ratio, spark timing, transmission tuning and a variety of other parameters for maximized horsepower and torque! They are available in 2 different styles : Stage 1 is designed to work with original stock engines, while Stage 2 is designed to work with modified motors with performance air intakes, headers or exhaust systems already installed. The modules are 50-state legal and are backed by a Lifetime Warranty. Free shipping to all of USA!

    Key Features:
    • Jet Performance Upgrade Stage 2 Computer Chip
    • 50 State Legal
    • Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 4.3L V6 GAS

    $131.21
  14. JET Power-Shift Computer Chips/Modules combine a Stage 2 chip/module with a very aggressive transmission program, which makes them ideal for modified vehicles with low-restriction exhausts and lower-temperature thermostats. The modules are programmed to deliver peak power increases under hard throttle conditions, including towing and wide-open throttle. They feature a complete range of DST programming of the air/fuel ratio, ignition advance, and transmission. The modules have all been track and dyno-tested to guarantee superior power gains without adversely affecting your vehicle's drivability. Free shipping to all of USA!

    Key Features:
    • Jet Power-Shift Computer Chip
    • 3.42 And 3.73 Rear Axle Gear Ratio
    • 50 State Legal

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 7.4L V8 GAS

    $194.96
  15. JET Power-Shift Computer Chips/Modules combine a Stage 2 chip/module with a very aggressive transmission program, which makes them ideal for modified vehicles with low-restriction exhausts and lower-temperature thermostats. The modules are programmed to deliver peak power increases under hard throttle conditions, including towing and wide-open throttle. They feature a complete range of DST programming of the air/fuel ratio, ignition advance, and transmission. The modules have all been track and dyno-tested to guarantee superior power gains without adversely affecting your vehicle's drivability. Free shipping to all of USA!

    Key Features:
    • Jet Power-Shift Computer Chip
    • 50 State Legal

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 7.4L V8 GAS / Automatic Trans

    $194.96
  16. JET Stage 2 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The modules will work to truly optimize your air/fuel ratio, spark timing, transmission tuning and a variety of other parameters for maximized horsepower and torque! They are available in 2 different styles : Stage 1 is designed to work with original stock engines, while Stage 2 is designed to work with modified motors with performance air intakes, headers or exhaust systems already installed. The modules are 50-state legal and are backed by a Lifetime Warranty. Free shipping to all of USA!

    Key Features:
    • Jet Performance Upgrade Stage 2 Computer Chip
    • 50 State Legal
    • Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust

    Fitment:

    1991 GMC C2500 Sierra, Sierra SLE, Sierra SLX / 7.4L V8 GAS / Automatic Trans

    $163.46
  17. Key Features:
    • Street Runner Power Chip
    • w/Overdrive

    Fitment:

    1991 GMC C2500 5.7L V8 GAS

    $138.29
  18. Key Features:
    • ThermoMaster Power Chip
    • California Model Only

    Fitment:

    1991 GMC C2500 4.3L V6 GAS

    $146.28
  19. Key Features:
    • Street Runner Power Chip
    • California Model Only

    Fitment:

    1991 GMC C2500 5.7L V8 GAS

    $138.29
  20. Key Features:
    • Street Runner Power Chip
    • w/Overdrive

    Fitment:

    1991 GMC C2500 4.3L V6 GAS

    $138.29
Results Per Page:

1-20 of 82 Results

1-20 of 82 Results