Hypertech 127072 TPI Auto Computer Chip (87 Corvette 350) The product is 87 Corvette 350 TPI Auto Computer Chip Easy to install The product is manufactured in United States Must run premium fuel Plug in and go, no wiring or soldering required 50-state street legal Use with 160 degree or 180 degree thermostat Allows the vehicle's top speed to be matched to the speed rating of high-performance tires