My idle revs about 750-1000 after I installed my tune from Brenspeed. Called them said that could be sticking open just a little bit. Told me to take some carb cleaner and clean it out. Ive got about 45K niles said thats a good about of time for oil and junk to build up. I took off the throttle body and such cleaned it all up and took care of the problem.
Clean your throttle body and MAF sensor really well. If that doesn't fix the problem then start looking into a new TPS( like 35 dollars cheap fix) If that still doesn't fix it then you need a new TB. I know that I have read somewhere that early 05's had a problem with the throttle body. I had the same problem for a long time and I got a GT500 TB. Fixed my problem.
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