Hypertech 351321 Hypertech Street Runner Power Chips Bumper Covers The viscous coupling provides damping

The viscous coupling provides damping at all RPM

The steel housing provides durability

the 14-inch diameter top and low-profile base are engineered to clear hoods and carburetor linkages

Professional installation by a certified chassis fabrication shop with TIG or MIG welding is strongly recommended to ensure weld quality meets safety standards for racing events

Operating range covers 45

Hypertech 351321 Hypertech Street Runner Power Chips Bumper Covers The viscous coupling provides dampingThe Hypertech 351321 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.