aFe 18-21 Ford Mustang GT 5.0L 85mm Billet Throttle BodyTest results on aFes Dynojet dyno showed power gains across the power band, topping out at +17 HP and +15 lb ft torque at 6,000 rpm. Testing was conducted on a 2020 Mustang 5. 0 comparing stock and the aFe Power BTB (all tests conducted using 91 octane fuel). No other modifications to the vehicle were made, so imagine the potential when you add in other performance enhancing products such as a cold air intake, tuner and cat back exhaust! By the way,