Originally Posted by TegManGS-R
when the car warms up the idle quits right? completely?
also when i have my car out of gear and rev it to about 3k and let off the gas the rpms drop like they should but it is like they go too far down and it idles itself up and then rests and purrs like it should. is this normal?
When the car warms up, the idle is steady at 750 rpms like normal but until then, it bounces from 1000 to 1500 rpms. Normally, the car will raise the idle speed until it reaches normal operating temperature, but it keeps it steady. In uberdata, it bounces around and there is a hissing noise coming from the EVAP purge solenoid. That is why it is recommended to unplug it.
My idling is a bit erratic when letting off the gas too, but it is because of the open atmosphere blow off valve and the lack of sufficient air flow through the intake. It only really does that with the blue box; uberdata has made it go away.