A new Engine Control Module (ECM) upgrade from HP Tuners unlocks tunability for the C8-generation Chevrolet Corvette Z06 and ZR1 engines. A tuned Corvette ZR1 reportedly produced 1180 horsepower at the wheels, as first revealed on Corvette Blogger.
The upgrade requires the ECU to be removed and sent to HP Tuners for modification. Once reinstalled, owners can adjust calibrations using HP Tuners' interface and software. The total cost for the upgrade and necessary tuning credits is approximately $2000.
HP Tuners' Matt Sanford explained that the tune can increase output by about 10-15% reliably, with potential for up to 25% gains for those pushing limits, though the stock turbochargers' speed cap remains a factor. The company had to reverse-engineer the new Bosch ECM used in these models.
This upgrade provides a significant power boost for those seeking more performance than the stock ZR1's 1064 horsepower, especially ahead of the anticipated hybrid ZR1X model.