For those with K&N FIPK
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Senior Member
Joined: Dec 2000
Posts: 976
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From: Sierra Vista, AZ (Bye, bye Bella Napoli)
For those with K&N FIPK
I really don't know if this has been the case even before I had the kit installed, but whenever I turn my truck off, I hear this hissing sound. Is this from the kit, and is normal whether from the kit or not? Thanks in advance.
Gene from AZ
Gene from AZ
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Joined: Feb 2001
Posts: 71
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From: Albuquerque, NM
Gene,
Mine sounds like it is de-pressurizing, or hissing when I turn the truck off. I am pretty sure that it is normal. You get used to it.
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1999 F-150 Ext. Cab XLT 4X4 W/ 5.4L
https://www.f150online.com/galleries...iew.cfm?num=32
Mine sounds like it is de-pressurizing, or hissing when I turn the truck off. I am pretty sure that it is normal. You get used to it.
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1999 F-150 Ext. Cab XLT 4X4 W/ 5.4L
- 285/75/R16 Bridgestone Dueller A/T
- 2" Performance Accessories Body Lift
- Lift Lips
- Pro Comp ES9000 Shocks
- K&N Gen II Filter Pack
- Genuine Steel Pro-Step side bars
https://www.f150online.com/galleries...iew.cfm?num=32
Senior Member
Joined: May 2001
Posts: 356
Likes: 0
From: Atlanta, GA USA
I just installed my kit last Sunday, and I got a couple of concerns... Do I have to oil the filter before installing it? It came in a sealed plastic bag, and it seemed oiled already. I just installed it without oiling it myself. I hope I hadn't committed a blunder...
I'm also very concerned about the temperature inside the hood. It seems extremely high. Granted, it doesn't seem any higher than it was before, but all that hot air can't be good for HP. The kit itself including the filter is hot to the touch. At least with the airbox, the air came from the fender area and was presumably cooler than the air inside the hood.
Anyway, butt-o-meter approves of the mod. And the big whoosh sound sure makes me grin. But was it worth $200? I dunno...
I'm also very concerned about the temperature inside the hood. It seems extremely high. Granted, it doesn't seem any higher than it was before, but all that hot air can't be good for HP. The kit itself including the filter is hot to the touch. At least with the airbox, the air came from the fender area and was presumably cooler than the air inside the hood.
Anyway, butt-o-meter approves of the mod. And the big whoosh sound sure makes me grin. But was it worth $200? I dunno...
chaean: The filter is pre-oiled. The oil gives it the pinkish color.
baddgene: Mine made the hissing noise before the filter also.
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The truck:
Teal 1997 XLT flareside with 4.6L, auto tranny, electronic shift on the fly, 3.55LS and 4x4 ORP.
Performance mods:
Gen. 2 K&N FIPK
Superchip
True dual exhaust exiting out the back
2.5" pipe with 18" glasspacks and 18"x4" round chrome slash cut tips
Appearance:
White face gauges
Euro clear corners
01L headlights
Covercraft tonneau cover
Billet pedals
16" Modern© wheels
265/75r16 Wild Country Radial TXR tires
Factory tinted rear windows
Bug deflector
Sound system:
Clarion ADX5655z Double Din Cassette & CD
4 Pioneer TS-A6865 speakers
Other:
Bedliner
Bulldog keyless entry/remote start
n6260k@cs.com
<A HREF="http://www.f150world.com/v8speeddemon" TARGET=_blank>
</A>
baddgene: Mine made the hissing noise before the filter also.
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The truck:
Teal 1997 XLT flareside with 4.6L, auto tranny, electronic shift on the fly, 3.55LS and 4x4 ORP.
Performance mods:
Gen. 2 K&N FIPK
Superchip
True dual exhaust exiting out the back
2.5" pipe with 18" glasspacks and 18"x4" round chrome slash cut tips
Appearance:
White face gauges
Euro clear corners
01L headlights
Covercraft tonneau cover
Billet pedals
16" Modern© wheels
265/75r16 Wild Country Radial TXR tires
Factory tinted rear windows
Bug deflector
Sound system:
Clarion ADX5655z Double Din Cassette & CD
4 Pioneer TS-A6865 speakers
Other:
Bedliner
Bulldog keyless entry/remote start
n6260k@cs.com
<A HREF="http://www.f150world.com/v8speeddemon" TARGET=_blank>
Senior Member
Joined: Jan 2001
Posts: 362
Likes: 0
From: Orange Park, FL
Every Cold Air Induction kit ive ever seen makes that noise 
Ohyea..for those with the Air Force One kits, the filter is the same material as a K&N..it just uses blue oil rather than red. It can be cleaned with any K&N cleaner/recharger kit.
Ohyea..for those with the Air Force One kits, the filter is the same material as a K&N..it just uses blue oil rather than red. It can be cleaned with any K&N cleaner/recharger kit.