C8 enthusiasts have another reason to pay attention, because HP Tuners has officially unlocked the engine control module of the Corvette ZR1. This development follows the company’s earlier breakthroughs, yet this time the focus is firmly on the ZR1’s electronic brain. The early results come courtesy of Lawrence Garrett Mitchell, better known to many as Cleetus McFarland, who is understood to be the first person to unlock his C8-generation ZR1.

The numbers that followed are difficult to ignore.

Complete Powertrain Information

What makes this ride apart from the standard car is the modified module that HP Tuners installed underneath. The specialists managed to extract no less than 1,180 horsepower and a whopping 1,483 Nm of torque. For context, that`s way too much than what Chevrolet advertises the most potent combustion-only Corvette to date with 1,064 horsepower and 828 lb-ft (1,123 Newton-meters), though those factory figures are measured at the crankshaft rather than at the wheels.

Also, customers can use the MPVI4 interface to license the engine control unit with 10 universal credits. Professional tuners can then read, edit, and write entirely new calibrations for the 5.5-liter powerplant.

As a rear-drive machine, the ZR1 reaches 233 mph (375 km/h) in low-drag specification, while the high-downforce configuration caps at around 215 mph (346 km/h). The sprint to 60 mph (97 km/h) is quoted at 2.3 seconds, and the quarter mile should be dispatched in 9.6 seconds at 150 mph (241 kph).

The VCM editor allows manipulation of the complex relationships between fueling, airflow, and load, with boost control singled out as another highlight. Unlocked modules also open the door to high-octane fuel strategies, and in McFarland’s case, the white-painted ZR1 seen in the video is running MS 109.

MS 109 is a high-performance race fuel produced by VP Racing Fuels. Being highly oxygenated, it enables the engine to burn more fuel than it could on 93-octane pump gas. There is also MS 109E, which relies on ethanol as the oxygenate, whereas MS 109 uses methyl tert-butyl ether.

Pricing

HP Tuners will offer the ECM unlock package for $1,499, provided customers ship their factory control units to the company’s headquarters in Buffalo Grove, Illinois. The ZR1 itself retails for $185,000 before destination charge in the United States market and is available in both coupe and convertible forms.

Conclusion

Less revvy than the naturally aspirated Z06 yet stronger in low-down torque, the combustion-only brother of the ZR1X has now become even more flexible from a tuning standpoint. With ECU access finally available, the ceiling has shifted, and for those chasing wheel horsepower figures, the conversation now starts uncomfortably close to 1,200.