My problem seems to be only the idle. When coming to a stop or slowing down the idle stays at what ever rpms that the engine was running before I let up on the throttle. Say I'm going 30 mph and reading 1500 RPM, I let up on the throttle to stop. The RPM stays at 1500 until I come to a complete stop. Then it come down to idle. I have checked and replaced all sensors on the throttle body, had Ryan, at SP adjust the chip. But I'm having the same problem. HELP!! Anyone Please. It's hard on the brakes and transmission. Jon..