There's a technical explanation why.
We’ll have to wait a few more months in order to watch the new Ford GT in action at the track. All in good time, we’ve been told by Ford. And while wealthy collectors the world over are racing to get in line just to have the chance to apply for GT ownership, Ford is currently performing some final testing on the race-going GT before the racing season kicks off. The new GT will come powered by a twin-turbo V6, but do turbochargers get in the way of what should be engine sound erotica? Perhaps.
Case in point: This GT racecar prototype, while caught testing at Sebring, sounds like it’s farting, and here’s a couple possible reasons why. One, it could be the antilag system doing its job as the driver is feathering the throttle around the corners. Two, we could be hearing the traction control system as the car goes to throttle at lower speeds.