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those are for the air pump. you can set your idle but you have to do it a certain way. with the car running you unplug the iac, next you turn the stop screw on the tb either in or out till you reach your desired rpm then shut the car off. now you changed the position of the throttle so you have to reset you're tps to .996 .997 whatever people have different oppinions of what the best base voltage is. after you set that you must reset the computer. take the negative terminal off for 20 minutes then you should be all set. oh don't forget to plug the aic back in before you put the battery back on. hope this helped
 
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