Racing Idle

[Adam94GT]

The IAC is what I actually believe to be an emissions reducing device. I think sudden opening and closing of the throttle results in extra emissions so the IAC is designed to create a smoother transition between open and closed throttle. Which might also explain why it's so difficult to defeat. You'd think installing an IAC block plate and creating a device to hold the butterfly slightly open would work, but it doesn't.

I think I may have another idea for an IAC "eliminator." What do you think of a gutted IAC but with a restrictor plate between the IAC and throttle body to keep the idle from racing?

Maybe that would be possible, hmmm?

I might consider replacing my TPS as well. Does anyone sell an adjustable TPS? Something with slots instead of round holes to allow more adjustment of the TPS than a factory replacement.