Dave dropped off his sweet M6 2023 CT4-V Blackwing with a wicked cool metallic forest green wrap for our White Belt Package plus a Gigs ported throttle body with the JB4 tuner. He was interested in seeing the kind of gains the JB4 could produce, so before installing any modifications, we strapped Dave’s car to the dyno to see what kind of power his car was putting down. To our surprise, this CT4-V Blackwing baselined as one of the highest we’ve seen; making 432 whp.

After installing colder Brisk spark plugs, Gigs ported throttle body and the JB4 tuner, Dave’s car produced a respectable 488 whp! Those are some impressive gains for a few bolt-ons!

Testing and development continues on our ATS-V Black Belt Performance Package. We started out by setting the new world records of 836 whp and 8.77 seconds in the quarter mile at Cadillac Attack in January 2023. In the last year we’ve made 50 dyno pulls above 800 whp and today we have we have a new record of 1,047 whp!  This is roughly 40 more horsepower than our old record, and we’re doing it with about four less pounds of boost.

This customer shipped their baby in from Nevada for the full Brown Belt treatment.  Their car has more appearance modifications than we have seen before, including some really cool one of a kind items.  And now he has power to match.  His Daily Tune automatically scales fueling and ignition timing for any fuel from 91-octane pump gas up to straight E85, and peaks at 636 whp.  When that’s not enough, the Kill Tune produces a monstrous 747 whp on E60 to E70 fuel!

This customer shipped us his 2022 A10 CT5-V Blackwing all the way from Wisconsin so we could set him up with a ported supercharger, ported throttle body and GPI cam package. He already had a set of Kooks headers installed as well as a custom cat-back exhaust, but was looking for a little more bite to go along with the bark.

After completing the parts installation and getting his car on the dyno, this CT5-V Blackwing picked up more than 150 whp over stock! We can assure you that this is one car you don’t want to mess with if you come across him on the street!

This customer is used to ultra powerful cars.  So she dropped her new CT4-V Blackwing off for Brown Belt upgrades  We left her with three separate tunes – one for 93-octane pump gas.  Another for pump gas with methanol injection.  And a third for ethanol fuel with methanol on top.  Good luck keeping up with her 736 whp powerband!