Hey guys,

in some of your signatures I noticed it says "modified airbox." What do you guys do for modification. I'm assuming this modification is in lieu of an FIPK. Does the performance come close to an FIPK? Thanks.

Lok

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1997 F-150 Supercab 4X4,
Royal Blue,
4.6 V-8, Tow Package,
Wheels and Tires,
Performance Exhaust,
Smitty Nerf Bars,
Alpine CD,
Alpine 5 Channel Amp
PPI 5 X 7's,
Boston 10" Sub,

 

Look under Technical Articles, scan down to Air Box Modifications. There is a step by step guide with photos. Everybody seems to think the after market FIPK give better results.

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98 Nascar Edition, Superchip, Airaid, Flowmaster 70 series, bedliner, in bed tool box, Profile bug deflector and window vents, Class III receiver hitch.

 

Here's another link you might wanna try

https://www.f150online.com/f150board...ML/001643.html

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• 1999 Super Cab XLT
• 2000 Windsor 5.4 ( slapper replaced)
• 3.55 Ratio L/S
• White/ Grey interior
  MODS
• Pioneer DEH P6000 HU w/ steering wheel remote
• Blaupunkt VC-54 component speakers (front)
• Infinity Refrence 5712cd 2-way Speakers (rear)
• Pioneer CDX P1250 12 disc changer
• Intake Silencer Removed
• LoJack Anti-Theft System
• Bug Deflector
• Aluminum Tool Box
• 2 Bull Ring Retractable Tie Down's
• Bed Mat
• Class III Receiver Hitch
• CCA Redfish Decal
• TTMB Sheepshead Decal

badangler@2coolfishing.com

 

I modified mine first while waiting for the proper FIPK to come out. The FIPK made a huge difference over the modified OEM one.

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2000 F-150 XL, RC, LB, 5.4L, 4R70W, 3.55LS,
Class III tow, Payload #3, & Convenience pkgs.,
4-wheel disc/ABS, Chestnut/Parchment 40/60,
Ford bedliner w/Paintsaver & gas/wheel/spare locks,
K&N F.I.P.K. w/Outwears pre-filter, Superchip,
Dynomax ultra-flow welded 3" cat-back w/ 3" Y-pipe,
Hellwig front & rear anti-sway bars, Rancho RS 9000s,
Mobil 1, K&N oil filter.

 

Here thttps://www.f150online.com/f150board/Forum10/HTML/002325.html
This may help you out also.
Pretty much all you do is remove the stock piece between the throttle body and the airbox.Replace it with 3 inch pvc pipe.(the stock one is really restrictive)You also remove the rubber part that goes between the airbox and the fenderwell and replace it with a peice of 3 inch pvc pipe(stock piece might have a 2inch inside diameter)These mods allow the motor to breathe easier,wich means more power.Hope this helps