Order one from
www.dsmisc.com install it.
When it doesnt work properly send your ECU into
www.ecmtuning.com so that the ISC drivers on your board can be replaced.
Your stock ISC burned them out, it only cost me like $45 to get them fixed.
your car will not idle properly again until you take these steps.
just in case you manage to find a isc that kinda works, just get your car up to freeway speed and take it out of gear, remove all foot from pedal, I will bet you money that your engine falls on its face down to whatever it is set to idle to.
With a properly working system, your car will idle at over a grand until you come to a complete stop, then it will drop down to 750RPM at the stoplight.
The advice is yours to take or leave, good luck.