What takes 15 months, 11,000 street miles, 228 dyno pulls and eight track days spread over Florida, Texas and Ohio? Crushing the 700 whp barrier for the first time ever with a CT4-V Blackwing. Today we reached a new milestone with the Brown Belt Performance Package on our flagship car when it achieved peak power of 710 whp, which is 300 whp higher than stock!

We just completed another remote dyno tune, working with the killer team at Exodus Performance in Austin, Texas. This was a 2016 ATS-V with M6 transmission belonging to Ronnie. Only mods were spark plugs and downpipes, the car put down an impressive 495 whp and 499 wtq. And as always, you’ll notice that genuine Tapout tunes produce the best powerbands around!

Our good friend Alex from Washington has a very nice 2016 ATS-V that happens to be one of the first ones we ever tuned more than four years ago. He shipped his car all the way across the country and Jorge the Magnificent went through every detail of the Brown Belt Performance Package before we moved over to the dyno. The powerband looked fantastic like usual, and peaked at 689 whp! We’ll get this car detailed and headed back out to Washington as soon as possible.

Our long-term customer and friend Chris shipped his baby all the way from California for Jorge’s magic touch. We installed our extremely popular Purple Belt Performance Package with Mace Stage 1 valve springs, titanium retainers and camshafts. First tune was fully automatic flex fuel, which ranged from 472 whp on 91-octane pump gas up to 573 whp on E60 or higher. Kill Tune is safe from E60 to E70 and put down a fantastic powerband peaking at 606 whp and 624 wtq.

Craig from New Jersey shipped his ATS-V in for the complete Brown Belt Performance Package treatment. Jorge worked his magic with the parts, then Craig flew in to meet us on dyno day. Nine pulls later the car produced peak power of 683 whp and 659 wtq. This ATS-V made a bit less power than we usually see with the well respected Caddy Issues turbos, since Craig still runs catted downpipes. Regardless, he had no trouble breaking into the list of the top 25 most powerful ATS-Vs ever!