I installed a thrasher 92 chip and an Adj. fuel regulator. The fuel gauge I purchased was not reading fuel pressure and because of that I had to guess on what I was setting it at. Also, after driving for about 5-7 miles and putting 100 octane in the tank, I stopped the car and put it in park. Thats when the idle shot up to 2000! I let it sit there to see if it went back down and it did not. When I drove home and stopped in the garage it did it again. Anyone know why this could have happend?