Tapout Tuning is proud to announce our new LF4 horsepower record of 1,009 WHP!

Testing and development continues on our ATS-V Black Belt Performance Package to get it perfect for public release. We started out by setting the new world records of 836 WHP and 8.77 seconds @ 155 MPH in the quarter mile at Cadillac Attack in January 2023. In the last six months we’ve made 40 dyno pulls above 800 WHP and we now have a new record of 1,009 WHP! Check out how peak power continues to climb, all the way past 7,000 RPM!

Black Belt will consist of all Brown Belt items with the addition of ATI Super Damper, Xtreme-DI fuel injectors, ARP CA625+ head studs and our soon to be released custom turbo kit. We still run the factory engine block, crankshaft, connecting rods, cylinder heads, intake manifold and intercooler system. Diamond Racing forged pistons will be recommended for those that want to run the largest boost and horsepower numbers. Of course, none of this would be possible without the incredible tuning hardware and software provided by HP Tuners.