I recently had my indy tune-up my P-car; plugs, tubes, and coils. Prior to the tune-up my P-car idled at 800rpm warm. After the tune-up, she idled at 750rpm warm. I do not know if this was due to the new parts, or if the indy reset the idle speed. Nonetheless, last week, I also replaced a defective muffler. Now, my P-car is back to 800rpm warm. Is 800rpm warm acceptable? Or, should I adjust the idle back to 750rpm warm? And, if so, how is this accomplished?

 

Err, i think your idle speed programmed into your ECU. Dont think you can really DIY adjust it like a carburetor lol.

But yeah my car idles at around 700-800 warm, never really paid too much attention to it.

 

Thanks for the reply Saibot. 800rpms @ idle appears to be acceptable.