FIPK
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Elder User
Joined: Jul 2001
Posts: 558
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From: Eastern, NC
FIPK
I've been looking through catalogs at all of the FIPK's that are out there. Only thing that I can tell that is different about these systems is that the airfilter is out in the open. My question is this, If I was to get say a K&N replacement filter and put it on my current 89 302, wouldn't it work about the same? Of course I would maybe have to do some modifying to the hose end to make the filter work, but it sure wouldn't cost $200 bucks. Also I'm aware of the "cold air" issue. But that could be done with some tin to block hot air from the engine. I have noticed that alot of these systems don't have the sheild to block hot air. I have thought about cutting the bottom out of current air box, but would like to get more air to it than that would allow.
Would like to here from some of you guys that have theses systems. I'm thinkin about tryin to rig one of these up myself, any help would be appreciated.
Would like to here from some of you guys that have theses systems. I'm thinkin about tryin to rig one of these up myself, any help would be appreciated.
Elder User
Joined: Jul 2001
Posts: 937
Likes: 0
FIPK
FIPK: the most expensive filter you'll ever buy.
I wouldn't cut the bottom out of the airbox, you'd have unfiltered air then. You could cut the top out of the airbox, but mud 'n stuff could easily rest in there on top of the filter. If you wanna rig one up yourself there's pics here under Intake:
http://www.superford.org/registry/?vID=139
I'm also aware of the hot air issue and Project MPG and blah, blah, BLAH!
BLAH
I wouldn't cut the bottom out of the airbox, you'd have unfiltered air then. You could cut the top out of the airbox, but mud 'n stuff could easily rest in there on top of the filter. If you wanna rig one up yourself there's pics here under Intake:
http://www.superford.org/registry/?vID=139
I'm also aware of the hot air issue and Project MPG and blah, blah, BLAH!
BLAH
Elder User
Joined: Oct 2001
Posts: 974
Likes: 0
FIPK
I have to disagree with you honney, cutting a hole in the bottom would allow filtered air, as the air is sucked up through the filter and then through the twin tubes to the throttle bodies. Cutting a hole in the top would be the direction to unfiltered air.
I have ready about several people on the Expedition board installing the FIPK, and it really not having much affect on performance or efficiency. I installed a replacement K&N air filter mainly for the reusability, and it only ran my ~$40. If you wheel a lot, having an open filter will allow the engine to suck up water very easily. On my '88 truck, I replaced the air box with an open style filter, and if I went through a big puddle, I stalled due to water ingestion. If you want to modify the airbox, cut a hole in the backside, then run a flex pipe out the side or up under the front bumper. This will get you the cold air, but also won't risk the water ingestion.
I have ready about several people on the Expedition board installing the FIPK, and it really not having much affect on performance or efficiency. I installed a replacement K&N air filter mainly for the reusability, and it only ran my ~$40. If you wheel a lot, having an open filter will allow the engine to suck up water very easily. On my '88 truck, I replaced the air box with an open style filter, and if I went through a big puddle, I stalled due to water ingestion. If you want to modify the airbox, cut a hole in the backside, then run a flex pipe out the side or up under the front bumper. This will get you the cold air, but also won't risk the water ingestion.
Senior User
Joined: Jan 2000
Posts: 289
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From: NJ
FIPK
I have the K&N FIPK on my 94. It has a nice intake sound over the stock air box but I did not notice any improvement in power over thier stock replacement filter. I can't see how they could justify charging all that money for 1 little bracket and an air filter. I was a little disappointed to see that it just sits in the engine compartment in the open. I thought for that kind of money it would have had some type of ducting so it would get most of it's air from outside the engine compartment.
Senior User
Joined: Feb 2002
Posts: 101
Likes: 0
FIPK
I got the diagram from the K&N web site which shows you all the hardware that comes with the kit. And for $189 its a rip off. I found that you can just order the FIPK filter element (Cone shape with two outlets) separately from anywhere that sells K&N filters. The part # for my 89 Bronco was RF-1012 and it was only $48. I can fab the rest of the hardware myself and save $140. Check out the K&N web site for more info.
