Hector from Ohio recently picked up a super clean 2017 CTS-V Sport, and he worked up the perfect fitment with some 20” wheels. We installed an aftermarket intake system replaced the spark plugs and added our intercooler fill and bleed system. Strapped the car to our DynoJet and peaked at 410 whp. As always, air/fuel and boost curves are nearly perfect, and the electronic throttle stays completely open too!

Nick upgraded to Tapout resonated downpipes and 3” true dual exhaust system and then stopped by our shop to have the remainder of his Blue Belt Performance Package installed. His M6 ATS-V put down 530 peak whp with a textbook perfect powerband!

Jesse from Texas worked with Exodus Performance to have his Blue Belt Performance Package installed and a remote dyno tune completed. The car baselined at 394 whp and ended the day at 495 whp, for a big improvement of 101 whp! And this was on EPA catted downpipes too.

Our good friend Paul from Ohio was the first ever ATS-V to run nine second quarter mile passes in the new ‘True Street’ category. He was slightly under the 3,950 pound minimum weight requirement, so he actually had to add ballast in his trunk that day. But like most of us, Paul always wants a little more. So our team installed Mace Stage 1 valve springs, titanium retainers and camshafts and strapped this car back on the dyno. The results turned out to be almost exactly what we expected. The engine made a little less horsepower and torque below 4,800 rpm. The power gains started at 5,300 rpm, and kept increasing as engine speed rose.

How much were the gains? If you make the common mistake of only considering peak numbers, all you’ll notice is the fact that power increased from 638 to 640 whp, which is statistically insignificant. Instead, look the graph at 6,000 rpm and you’ll see 10 more whp. At 6,500 the gain was 20 whp. And at 7,000 rpm it’s typically 30 whp (although we failed to spin the engine that high on our baseline pull). These are significant gains that can be felt driving the car, and will produce real results both on the street and at the track.

But wait a minute? Does this mean the car is now slower, since it has less bottom end power than it did before? Not at all. Once you consider the fact that the engine speed is nearly always above 5,500 rpm at WOT, you realize that any time you’re at full throttle with these cams, your engine will now be producing more power!

Scott from Missouri worked with us on a Blue Belt package with remote tune last year. This year he was looking to turn up the heat, so he dropped his car off for an upgrade to Purple Belt. Jorge knocked out the installation in no time and we did some custom dyno tuning which resulted in peak power of 612 whp and 637 wtq. We hope Scott remembers to leave the Traction Control enabled for his drive home!