ever since I had my car dyno tuned with SCT. the idle is at about 800 rpms.(when A/C is on its at 1000rpms!) How do I make it go back down to about 600-650 rpms like it was before the tune? Or should I just leave it to idle at 800rpms???? is that ok?

 

well mine is exactly the same. With no a/c it idles about 800, and when the a/c is on it idles at 1000 and sometimes moves around lol. if you get the extreme tune software, which is free from sct, you should be able to adjust your idle. i wouldn't even bother though cuz it shouldn't be causing you any problems.

 

Idling around 800 is normal. If it idled at 600, I would get mine checked.

 

Well my car hasn't had any tuning and my car idles at 600 rpm all the time.

 

It is normal for it to idle higher with AC on.

 

That is probably what they tuned it to idle at. When I got my SCT Xcal2, the custom tune that was sent with it had the idle set at 800. Using the extreme tune software and my xtr files, I dropped the idle down to 750, to save a little gas. Just think, the higher the idle, the more gas you are wasting because you are just sitting. I mean, this may be a question for the tuner because they may have set it there for a reason. I don't know your intentions for the car or situation, but for different setups, it may need to idle higher. But anyway, with mine, I dropped the idle a bit, with no problems, and it definately helped my gas. Just food for thought.

It seems that 800 is a nice round generic number for idle after chipping/tuning. In my situation, I could go lower and I did. So far so good.

Scott

 

yea...i kinda figured that they tuned it to idle at 800. I like the way it sounds when idleing at 800 better anyways..lol yay

 

800 is perfectly normal and lowering it for gas mileage purposes is rather pointless cause u will save about .3 of gas a week so i wouldnt waste my time