Don and Jessica from Louisiana drove in with their beautiful new CT4-V Blackwing. The car was ready for it’s first oil change, so we took care of that for them, upgrading the filter to the extra heavy duty AC Delco UPF63R. We also installed the newly released Blue Belt Performance Package before working our calibration magic on the dyno.
These cars are rated at 472 peak crankshaft horsepower from the factory. Assuming 12% chassis dynamometer loss for cars equipped with the A10 transmission, this car should put down approximately 415 whp. Our DynoJet 224xLC once again proved to be within one percent of perfect, showing 412 and 413 whp on two back to back baseline pulls.
After installing parts and tuning, the new peak power measured at 516 whp for a whopping 100 whp gain! The car showed huge gains all the way from 3,800 to 6,500 rpm. On the A10 cars, they are nearly always between 4,800 and 6,500 rpm when you’re at full throttle. And this car picked up 85 to 115 whp across that entire range!!