Re: Clean your throttle bodies!
There was a lot caked on the back of the butterfly but where the butterfly seats there wasn't much. The front of the throttle body was practically clean. The crud just flaked off with the help of an old gift card I used to scratch it off. I had some left over Mass Air Flow cleaner I sprayed on it then I used some 0000 Steel Wool to polish it up a bit and get the residue off. Lastly I sprayed it again then hit it with a Micro Fiber cloth. The only noticeable difference is my CAI makes a more pronounced hissing sound and throttle response from idle feels a little better.