Ford Gt broken tune

Can someone layout here how you actually create a broken tune for the Ford GT. Mine was gifted to me. I saved it then started playing with the tune.
Are there other cars like this?

The broken tunes are what they are because your making the car less than what it is stock.... In this case the Ford GT is going from a supercharged 5.4 550HP engine to a naturally aspirated 5.4 412 HP engine. Which also lowers your starting PI for the car.... With the Ford GT, this is how you do it.... Go to conversions and do the aspiration conversion... Switch it to Twin Turbo.. The go to engine and Power upgrades and buy the race version of the Turbo.. Then tap the X button to sell the turbo.. Now you have a naturally Aspirated GT.. Hope this helps...

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