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Unread 02-09-2013, 11:23 AM   #1
SLCSmoker
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Howell FI Air Filter

So the Howell kit is on and running like a champ, whats the best air filter setup to go on top? I see the instructions tell you to go buy a K&N and give you the part # but I don't see how that's going to clear the brake booster... anyone got experience here? (I did a search.. nothing conclusive). Thanks!

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Unread 02-09-2013, 03:23 PM   #2
NonRubicon
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The main thing to keep in mind is that the neck of the Howell throttle body is 5-1/8" (5.125"). This is the same size as many carbs, so you can go from there and customize your filter setup to your desire using whatever size/shape carb style filter you like. The larger you can go on filter size, the greater the filter area, and thus the longer your filter will last without needing to swap in a new one. If you go off road, you might want to avoid the K&N style washable filters. They let a lot of small dust particles through.

I just picked up a round, generic carb air filter right off the shelf from my local parts store. Just been using regular STP brand filters for it. I think mine is about 11" diameter and easily clears the brake booster. I needed a neck spacer to better clear the electrical connectors on the throttle body.

Another option is to use a plenum type setup which would allow you to position the actual air filter in a location other than directly over the throttle body, let's the engine get cooler air if you position it right, and you can better protect it from water. A little more pricey than the carb style filters though.
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Unread 02-09-2013, 06:05 PM   #3
jay-h
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I went to pep boys and got one of these. Clears everything with no issues. The Jeep will only pull so much air, the filter is the least of your restrictions.

http://www.jegs.com/i/Edelbrock/350/...FUWo4AodsQgADw

I have read (even on JF as I remember) some tests which suggest than K&N reusable element gains flow at the cost of reduced effectiveness in filtration. You may want to google some test results before deciding.
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Unread 02-09-2013, 06:14 PM   #4
timatoe
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Quote:
Originally Posted by jay-h View Post
I went to pep boys and got one of these. Clears everything with no issues. The Jeep will only pull so much air, the filter is the least of your restrictions.

http://www.jegs.com/i/Edelbrock/350/...FUWo4AodsQgADw
I use this one too, well the chrome version cause it's like $14 at Napa.
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Unread 02-09-2013, 06:40 PM   #5
Michaelgoesrawr
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Mine is just the stock box with an extension. Works fine.
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Unread 02-10-2013, 08:24 AM   #6
SLCSmoker
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Thanks guys, I went with the Edelbrock too after following the link. Fits great, looks great! Man this Howell FI turns it into a different Jeep completely.
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Unread 02-10-2013, 08:38 AM   #7
jay-h
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Originally Posted by SLCSmoker View Post
Thanks guys, I went with the Edelbrock too after following the link. Fits great, looks great! Man this Howell FI turns it into a different Jeep completely.
I did mine last summer and was well pleased with the results. Howell was helpful especially when I had some issue due to the Duraspark pickup.

The one quibble is they could stand to reorganize the installation manual. All the information is there, but it's not all easy to find.
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Unread 02-10-2013, 11:20 AM   #8
jbolty
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I just went with a stock filter housing from a 4.3, as I recall it was an astro van. The filters are cheap and I change it about every other trip to the desert; the dust out there is like baby powder.

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