Hypertech 124082 TBI Auto Computer Chip (94 CK25/35 P/U 454) The product is 124082 - 94 CK25/35 P/U 454 TBI 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