Amazing Hypertech 121121 Street Runner Power Chip for 1991 C15/25 350 TBI Auto

Product Description

Hypertech Power Chips are direct replacements for the stock chips in 1981-1995 GM vehicles. The Power Chip contains the Hypertech Power Tuning data that controls the engine's air/fuel ratio and spark advance for maximum power and performance, plus potential gas mileage improvements. Power Chips can be easily installed, using only hand tools. Street Runner Power Chips are designed for daily street driving or competition in unmodified vehicles using a stock thermostat.

• Must run premium fuel
• Plug in and go, no wiring or soldering required
• 50-state street legal
• Use with stock temperature thermostat
• Allows the vehicle's top speed to be matched to the speed rating of high-performance tires

Hypertech 121121 Street Runner Power Chip for 1991 C15/25 350 TBI Auto Reviews

Customer Reviews

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BO$$, September 21, 2012 By  steve - See all my reviews Amazon Verified Purchase( What's this?) This review is from: Hypertech 121121 Street Runner Power Chip for 1991 C15/25 350 TBI Auto (Misc.) My truck is 15x faster than before. im getting 8 mpg better than i used to. 0-60 is also faster Help other customers find the most helpful reviews  Was this review helpful to you?  Report abuse | Permalink   Comment

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