I've only seen one car that we couldn't get the Key trick to work on, but it is possible. If you have a diablo predator, you can put the car in "dyno mode" which will disable the traction control as well. Good for the track or if you plan a fun spirited drive! Key trick is only on the go option really. Partially disabled by hitting the traction control button once should allow you to spin the tires plenty though, just don't get sideways, or she'll start mom-ing ya again! Good luck!