To disable the spoiler simply pull the fuse. It's located under the hood in the fuse box, number 20 I believe. It's a 10 amp fuse. The car will go as fast without the fuse as it does with it, but you'll get a tone that starts sounding at 85 mph. However, pull the fuse at your own risk. I'm not a mechanic or engineer and disabling the spoiler could lead to loss of control and serious injury or death.