cold air induction?
 

I hear cold air induction helps boost power. Anyone know an easy way to make one for a 90 2.3l

well I don't know about easy but it is pretty straight forward.

First remove all of the plastic piping including air silencer, and filter box.

This should leave you with lots of room. Get some exaughst pipe (the kind that can be moved around, it is segmented) put a k&n on cone filter on the end or an equivalent cone filer, to make ram air put a sealed box over the filter with a plastic pipe (doesn't have to be plastic) leading to the front of the car in the high pressure area, you want to add some type of a scoop to get more air pressure. Or the siplest way it to buy a RAM air kit for about $130 or a k&n kit.

Brad.