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Heavy-duty Engine Tuning Chip For 1991 Astro/safari 4.3 Tbi Auto Therm. (ca) In Multiple Colors [lgHTRwVx]

$36.99 $118.99 -69%

Engine Tuning Chip for 1991 Astro/SafariExperience unparalleled performance with our Engine Tuning Chip designed specifically for the 1991 Astro/Safari 4.3 TBI Auto Therm. This Hypertech ThermoMaster Power Chip is a game-changer for your vehicle, eng

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Heavy-duty Engine Tuning Chip For 1991 Astro/safari 4.3 Tbi Auto Therm. (ca) In Multiple Colors [lgHTRwVx]

Engine Tuning Chip for 1991 Astro/Safari

Experience unparalleled performance with our Engine Tuning Chip designed specifically for the 1991 Astro/Safari 4.3 TBI Auto Therm. This Hypertech ThermoMaster Power Chip is a game-changer for your vehicle, engineered to enhance power and efficiency. With its advanced power tuning technology, this chip optimizes your engine's air/fuel ratio and spark advance, resulting in maximum power output and potential gas mileage improvements. Its ease of installation, requiring only hand tools, makes it a convenient upgrade for any enthusiast.
  • Power Tuning Data for enhanced performance and efficiency.
  • Easy Installation with no special tools needed.

Engine Tuning Chip Details

The Hypertech ThermoMaster Power Chip is designed for stock 1995-1981 GM vehicles, ensuring compatibility with your 1991 Astro/Safari. This chip is engineered to work with vehicles using a 160° or 180° thermostat, making it versatile for various driving conditions. The Power Chip is emissions certified and 50-state legal, providing peace of mind for both daily street driving and competition use. Its premium octane fuel requirement ensures optimal performance and longevity.
  • Engineered for GM Vehicles from 1995-1981.
  • 50-State Legal and emissions certified for peace of mind.

Practical Benefits and Uses

Whether you're a daily driver or a competitor, the Hypertech ThermoMaster Power Chip offers practical benefits that enhance your driving experience. With its ability to maximize power and performance, this chip is perfect for those looking to get the most out of their vehicle. Its potential gas mileage improvements make it an eco-friendly choice, while its ease of installation means you can enjoy these benefits without the hassle of professional services. This chip is ideal for enthusiasts who want to customize their vehicle while staying within legal boundaries.
  • Maximized Power and Performance for a thrilling driving experience.
  • Eco-Friendly with potential gas mileage improvements.

What Our Customers Say

January 29, 2026

Absolutely no complaints!

A great product. I am so happy with it all around.

- Olwen A..

January 29, 2026

Absolutely no complaints!

This is a nice, and a very, very, very, very solid item.

- Osian B..

January 29, 2026

Absolutely no complaints!

It’s a very satisfying piece of tech to own.

- Jocasta O..

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