The digital garage of my 1998 Jeep Wrangler.

On-Board Air

Engine Driven On Board Air from Kilby Enterprises

April, 2005

On board air is one of the most useful additions I have on my TJ. Brad Kilby at provides compressors and mounting kits that simplify the installation. I dropped by his shop and he put together a complete package including fittings, air hose and one of his mil-spec electrical switches.

On the early TJs, if you have air conditioning and you want to keep it, you have to remove the air filter canister to make room for the York compressor. I opted for the Rock-It intake from Turbo City. No, it didn't increase my MPG and if it increased the horse power, I can't tell. But it does make an interesting whistling noise at certain RPMs. And, yes, I have a prefilter.

To remove the canister, remove the clips that hold the top on and remove the filter. That will expose the 3 bolts that hold the canister to the fender well. The nuts are easily accessible from the underside of the fender.

BTW: That loop of wires in the photo was the controller for my Taurus fan conversion test project.

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