Hypertech 121251 Hypertech Street Runner Power Chips ARP Pro Series Cylinder Head Studs The Hypertech ThermoMaster Computer Chips

The Hypertech ThermoMaster Computer Chips (ref 4706) is a classic ECM performance upgrade from Hypertech that replaces your vehicle's stock calibration EPROM with a professionally tuned chip

The bracket features precision-laser-cut mounting holes that match engine block patterns and common power steering pump mounting configurations

All components are matched for a compatible combination that is ready to drop into your block

Some applications may require minor trimming for proper rear valance clearance

Product 34946 is verified for correct specifications and dimensional accuracy before shipment

Hypertech 121251 Hypertech Street Runner Power Chips ARP Pro Series Cylinder Head Studs The Hypertech ThermoMaster Computer ChipsThe Hypertech 121251 Hypertech Street Runner Power Chips from Hypertech is a direct ECU reprogramming solution that replaces your vehicle's factory calibration EPROM with an optimized performance tune. Designed for OBD I and early OBD II gasoline vehicles, this performance chip rewrites fuel and spark tables for measurable horsepower and torque gains. It's a straightforward hardware upgrade that requires no laptop, no software, and no dyno tuning.