6637 installed today
Thread Starter
|
Lead Driver
Joined: Mar 2000
Posts: 9,359
Likes: 1
From: Hampstead, NC
6637 installed today
It was nice outside today(+15F), so I decided to install my 6637(KWIK)filter that I recieved last week from Fleet Filter.
Install was very easy and took just about 1/2 hour. I ended up using a piece of 4"od stainless tube to connect the filter. I started with a piece that was 3 1/2" long but ended up cutting it to 2 1/2" to make the filter fit in the space provided. The end of the filter and the intake tube are now just about butted together. I also had to push the filter toward the engine a little to clear the mounting point from the stock air box and allow the fiter to drop down enough to clear the hood. I love the sound, especially the whooosh when you get out of the throttle or when it shifts. I have pics in my gallery of the process of removing the stock airbox and installing the 6637 filter.
I should have my guages (Autometer Phantom's) by mid week and my 5" exhaust( sans muffler
) soon there after.
Install was very easy and took just about 1/2 hour. I ended up using a piece of 4"od stainless tube to connect the filter. I started with a piece that was 3 1/2" long but ended up cutting it to 2 1/2" to make the filter fit in the space provided. The end of the filter and the intake tube are now just about butted together. I also had to push the filter toward the engine a little to clear the mounting point from the stock air box and allow the fiter to drop down enough to clear the hood. I love the sound, especially the whooosh when you get out of the throttle or when it shifts. I have pics in my gallery of the process of removing the stock airbox and installing the 6637 filter.
I should have my guages (Autometer Phantom's) by mid week and my 5" exhaust( sans muffler
) soon there after.
Logistics Pro
Joined: Mar 2004
Posts: 4,221
Likes: 3
Nicely done, Mike. Looks a lot like my setup, leaving the lower half of the stock airbox, and the Autozone Duralast battery and all. 
http://rides.webshots.com/photo/2899...86590301ziVBMv
http://rides.webshots.com/photo/2899...86590301ziVBMv
Posting Guru
Joined: Sep 2005
Posts: 2,476
Likes: 2
From: Monroe Michigan
Originally Posted by Ford79
It was nice outside today(+15F), so I decided to install my 6637(KWIK)filter that I recieved last week from Fleet Filter.
Install was very easy and took just about 1/2 hour. I ended up using a piece of 4"od stainless tube to connect the filter. I started with a piece that was 3 1/2" long but ended up cutting it to 2 1/2" to make the filter fit in the space provided. The end of the filter and the intake tube are now just about butted together. I also had to push the filter toward the engine a little to clear the mounting point from the stock air box and allow the fiter to drop down enough to clear the hood. I love the sound, especially the whooosh when you get out of the throttle or when it shifts. I have pics in my gallery of the process of removing the stock airbox and installing the 6637 filter.
I should have my guages (Autometer Phantom's) by mid week and my 5" exhaust( sans muffler ) soon there after.
Install was very easy and took just about 1/2 hour. I ended up using a piece of 4"od stainless tube to connect the filter. I started with a piece that was 3 1/2" long but ended up cutting it to 2 1/2" to make the filter fit in the space provided. The end of the filter and the intake tube are now just about butted together. I also had to push the filter toward the engine a little to clear the mounting point from the stock air box and allow the fiter to drop down enough to clear the hood. I love the sound, especially the whooosh when you get out of the throttle or when it shifts. I have pics in my gallery of the process of removing the stock airbox and installing the 6637 filter.
I should have my guages (Autometer Phantom's) by mid week and my 5" exhaust( sans muffler
) soon there after. 
Trending Topics
Post Fiend
Joined: Jun 2006
Posts: 5,497
Likes: 7
From: Central, Al
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread Starter
|
Lead Driver
Joined: Mar 2000
Posts: 9,359
Likes: 1
From: Hampstead, NC
Originally Posted by maevans
Somebody has PMS.
Yes, I do
I'm going to have to start working some more OT to pay for all this stuff thoughI was going to remove the bottom of the air box, but didn't see what the battery would sit on if it was removed. It all looks like one piece.
I also tried to get the tube over the filter(not very hard though) but with it being only 15F, it was too stiff to streatch.
Ryan, I noticed how close your filter sits to your battery, do you not have the divider between the battery and old airbox? That divider, along with the tab that one of the stock air box screws attaches to is the reason I ended up shortening the pipe to 2 1/2" and also having to push the filter slightly(about 1/2") toward the engine, so I could push it down far enough to clear the hood. The insulation on the underside of the hood still touches the filter slightly at the outer edge near the fender.
Logistics Pro
Joined: Mar 2004
Posts: 4,221
Likes: 3
Hey Mike,
It's hard to picture it in my head right now, but I'm pretty sure my filter butts right up against the battery. What I did do was trim a couple of the little fin-like things at the bottom of the stock airbox, as the filter would hit these and not sit low enough to clear the hood. I trimmed a couple of those off so the bottom was more flat, and that allowed the filter to sit low enough to actually clear the little lip on the fender, as you can see in this pic:
http://rides.webshots.com/photo/2033...86590301EzkmWJ
By basically bumping up against the battery, the relay boxes on the other side, and being trapped under that little lip, the filter has no real chance for any movement other than a slight vibration. Sure can't bounce or bump around at all, though.
It's hard to picture it in my head right now, but I'm pretty sure my filter butts right up against the battery. What I did do was trim a couple of the little fin-like things at the bottom of the stock airbox, as the filter would hit these and not sit low enough to clear the hood. I trimmed a couple of those off so the bottom was more flat, and that allowed the filter to sit low enough to actually clear the little lip on the fender, as you can see in this pic:
http://rides.webshots.com/photo/2033...86590301EzkmWJ
By basically bumping up against the battery, the relay boxes on the other side, and being trapped under that little lip, the filter has no real chance for any movement other than a slight vibration. Sure can't bounce or bump around at all, though.
Freshman User
Joined: Jun 2006
Posts: 47
Likes: 0
You can buy a battery tray from Ford or online that will fit there. It is just like the one on the passenger side. It works out great and no cutting up your stock airbox. Although this takes the fun out of it. Good clean fit and finish look.
Junior User
Joined: Dec 2004
Posts: 51
Likes: 0
I did the 6637 filter mod a few months ago during warm weather and now I notice that I produce a lot more white smoke. The engine starts fine, runs great, but I get considerable white smoke at cold temperatures. It was -10F on the thermometer this morning when I started my truck. It warmed for at least 20 minutes before I moved it and it still had white smoke. I noticed that 12 miles down the road it would still do white smoke especially at shifts (6 spd). Does the temperature sensor and this filter mod cause more white smoke in really cold weather? Or is it just the really cold weather? Like I said before truck starts and runs great. Just wondering.
Thanks
Dwight
Thanks
Dwight
Logistics Pro
Joined: Mar 2004
Posts: 4,221
Likes: 3
Is your IAH (intake air heater) intact? It's purpose is to reduce white smoke at idle. It's not a necessary thing, but can help with what you're describing.
Regardless, as long as the intake air temp sensor is still in-tact, the new filter shouldn't effect or cause white smoke at all.
Regardless, as long as the intake air temp sensor is still in-tact, the new filter shouldn't effect or cause white smoke at all.
Postmaster
Joined: Oct 2004
Posts: 3,767
Likes: 1
Originally Posted by Kwikkordead
Dang I miss that turbo woosh sound with my AIS. I can still hear it sing but not woosh.
Junior User
Joined: Dec 2004
Posts: 51
Likes: 0
ryaneverk2
I have no idea if my iah is intact. I'm not sure what it looks like either. I have to do a search and see what it looks like. Thanks for the lead and I think it is mostly the really cold that does it. When it gets to around 20 it doesn't do it then.
I have no idea if my iah is intact. I'm not sure what it looks like either. I have to do a search and see what it looks like. Thanks for the lead and I think it is mostly the really cold that does it. When it gets to around 20 it doesn't do it then.