Tested on World Motorsports’ Windtunnel Mustang Dyno
387.6 WHP & 310.5 WTQ
(The test stopped slightly before, so the graphs below will be slightly off)
We also measured brake horsepower at a conservative 17% loss: 466 BHP.
For reference, this is 36 HP more than Guntherwerks’ 4.0L engine.