Last year we tuned Randy’s CTS V-Sport and he picked up nearly 100 whp in some parts of the powerband. So this year when he purchased a beautiful ATS-V, he drove in from Kentucky to have us work our Blue Belt magic while the temporary tags were still on the car.

Jorge’s ATS-V is one of the most impressive we have ever tuned. It started it’s life as a V-Lab car, which basically means it’s break-in period was 3,500 miles of WOT on a race track in the desert heat. Jorge has been modifying and tuning this car for four years now. First with no mods. Then with BOOSTane. Next he made 619 whp with our Purple Belt Performance Package on ethanol. And most recently he added Caddy Issues turbochargers and Mace camshafts, upping the ante to 738 whp and 724 wtq! This car has more than 60,000 miles on the original engine and transmission, and has been down the drag strip hundreds of times.

Eldon is a great guy, and an old Grand National drag racer from back in the day. He drove over from Indiana and dropped his ATS-V off for another round of upgrades. He had already run the equivalent of a 10.03 quarter mile at full weight with his Purple Belt mods, making 596 whp. We added Caddy Issues turbochargers, Mace Stage 1 camshafts and valve springs, ARP head studs and Tapout intake. On the dyno and Eldon’s car put down a beautiful powerband peaking at 713 whp.

Our friend Charlie brought his ATS-V in from Kentucky, wanting to add Caddy Issues turbochargers and ARP head studs to his Purple Belt Performance Package. This car made a bit less power than we usually see with these turbos, most likely due to the fact that he still runs factory camshafts and valve springs. Even so, 685 whp and 695 whp puts him squarely in the top 20 most powerful ATS-Vs of all time!

Another ATS-V with Caddy Issues turbochargers, another 700 whp powerband! We did a Purple Belt Performance Package with Mace Stage 1 camshafts last spring. Kurt enjoyed that for the last year, then shipped his car in from Tennessee for some more upgrades. We installed ARP head studs and Caddy Issues turbochargers, and strapped it back to the dyno. Kurt’s incredible powerband tells the story.