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Hypertech 121022

Thermo Master Power Chip 1991 S10/S15 2.8L

Hypertech 121022

533-121022

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Hypertech 121022 Thermo Master Power Chip 1991 S10/S15 2.8L $121.99
Hypertech Thermo Master Power Chip
  • 1991 S10/S15 2.8L
  • Manual Transmission

  • Specifications:

    Quantity
    Sold individually
    Manufacturer's Part Number:
    121022

    Plug-In Performance for 1980's and 1990's GM Vehicles

    The premiere name in classic automotive ECM programming, Hypertech became famous with this replaceable power chip, or "PROM", for older vehicles. Before the OBD-II port, OE computer chips on the ECM had to be physically replaced. Hypertech's Thermo Master Chip is one of the best PROMs available. It can create instant power by adjusting spark advance and air/fuel ratio. Such adjustments can also increase fuel mileage potential with sensible driving. Designed for use with a PowerStat 160° or 180° Thermostat, Thermo Master Chips eliminate tuning guesswork... just plug in and drive.

    Does Hypertech 121022 fit your vehicle?

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    1991 GMC S15 JIMMY

    • EngineType: ALL
    • SubModel: ALL

    1991 GMC SONOMA

    • Liter: 4.3
    • SubModel: SLE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1991 CHEVROLET S10 BLAZER

    • EngineType: ALL
    • SubModel: ALL

    1991 CHEVROLET S10 PICKUP

    • Liter: 4.3
    • SubModel: BAJA
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1991 CHEVROLET S10 PICKUP

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1991 GMC SONOMA

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1991 CHEVROLET S10 PICKUP

    • Liter: 4.3
    • SubModel: TAHOE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )
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