Post by
1991S13 »
https://forums.nicoclub.com/1991s13-u22320.html
Sun Feb 27, 2005 5:15 pm
The little black box behind the air box is the AIV...
Mine was clogged, so I just removed it. I read on here that it will only make a difference when you're emissions tested if they look under the hood or if they test your car when is cold.
Removal was easy, if I remember right there were only a few bolts on a bracket on the right side, then it was a matter of just pulling a few (I think 2 large and 2 small) hoses off of it. I plugged the large hoses with a large bolt in each, then put the clamps back around them just to be safe. The 2 small hoses I just stuck a small screw in each.
It really didn't make any noticable difference, just cured my rough idle. I kept mine in the corner of the garage just in case I need to reinstall it for emissions in the future.