A couple months ago we posted the first ever CT4-V Blackwing dyno chart above 700 whp. Today we reached a high mark running the Brown Belt Performance Package on our flagship car. This time we tuned the car using the soon to be released Tapout Tuning Module (TTM). These modules are more sophisticated than any other devices on the market, giving us the ability for much more precise tuning. You may notice that the new dyno chart looks similar to the 710 whp dyno chart we posted two months ago. However, we now have 85 foot-pounds more torque at 4,000 rpm, and much smoother boost and power curves.

Our good friend John from Michigan is planning to attend the Cadillac Attack event in Florida later this month. We’ve known John for a long time, and second place isn’t really his thing. When he dropped off his beautiful Crystal White Frost sedan we knew he’d want the full Brown Belt treatment. John now has one of the best powerbands ever produced by any ATS-V, and we can’t wait to see what the car can do at Cadillac Attack!

It took our team more than one year to hit 700 whp with the CT4-V Blackwing. The CT5-V Blackwing should easily cross that threshold next month, on pump gas, only two months into the process.

We did four baseline runs over the last 15 days, ranging from 614 to 621 whp on a DynoJet with SAE correction factor and smoothing = 5. We decided to use the median 619 whp pull as our official starting point.

We installed Green performance air filters, Kong Stage X ported supercharger, Nick Williams 103 mm. throttle body and got 673 whp.

Next we switched from the 2.50 to 2.30” GripTec supercharger pulley and installed Brisk RR12S spark plugs with .027” gaps and got 694 whp. All runs were done using 93-octane pump gas.

Next month we plan to add Kooks competition headers, a little more boost and also start testing with ethanol fuel blends. We’ll be shooting for 730 to 750 whp.

Special thanks to Alek from Illinois who loaned us his car to experiment with!

We bolted our new carbon fiber intake to a completely stock CT4-V Blackwing, and instantly gained 30 to 50 peak whp.  Even more impressive is the 70 plus whp gains we saw near redline!  These performance improvements take place with no other changes, and no tuning required.  Idle, drivability and fuel economy will all remain the same as stock, as long as you stay out of the boost.  There are no DTCs or Check Engine light issues.  With Green performance air filters, Brisk spark plugs, JB4 tuning module and a custom tune on our in-house dynamometer, we were able to get total gains of more than 100 whp!

Myron from Maryland just picked up a very rare 2019 ATS-V coupe in velocity red with low mileage. He drove it directly to Tapout Tuning with the temporary tags still in place and requested our most popular Purple Belt Performance Package. Nobody else can tune these cars like we do, and that’s evident in Myron’s new dyno chart. By the way, ported throttle bodies were on national backorder at the time, so he’ll be adding that piece of the puzzle later.