6637 Installed
Posting Guru
Joined: Nov 2007
Posts: 1,521
Likes: 0
From: Tupelo,Ms
Post Fiend
Joined: Apr 2007
Posts: 7,241
Likes: 1
From: Powder Springs, East TN
All part of PMS lol, now its just time to get a Pete's cover and put on it 
. I use to think the 6637 was a big filter until I seen this massive thing through under a 97 OBS truck check out Brandon's Smokin Pictures you'll see.
. I use to think the 6637 was a big filter until I seen this massive thing through under a 97 OBS truck check out Brandon's Smokin Pictures you'll see.
1/8 mile Oval Track
Joined: Dec 2007
Posts: 1,300
Likes: 0
From: Newport,Tennessee
If you remove the foil, wear gloves!! That crap will cut you. If you think you have a good sound just after installing the 6637 wait until you do the foil delete. Gives more wooooosh sound from the turbo. My first tank of fuel went very quickly after doing this mod. (had to floor it,and let off alot) just to listen to it 
I know this is another post but what does cleaning off the foil on the IC tube do? or is it just for looks?[/quote]
I know this is another post but what does cleaning off the foil on the IC tube do? or is it just for looks?[/quote]
Post Fiend
Joined: Apr 2007
Posts: 7,241
Likes: 1
From: Powder Springs, East TN
It can't have went as fast as my tank of fuel with the DP put in .
.If you remove the foil, wear gloves!! That crap will cut you. If you think you have a good sound just after installing the 6637 wait until you do the foil delete. Gives more wooooosh sound from the turbo. My first tank of fuel went very quickly after doing this mod. (had to floor it,and let off alot) just to listen to it
1/8 mile Oval Track
Joined: Dec 2007
Posts: 1,300
Likes: 0
From: Newport,Tennessee
You have to use a piece of 4" pipe about 4 inches long to adapt it to it
Senior User
Joined: Jan 2004
Posts: 293
Likes: 0
From: Oregon
You just need a 4" piece to couple the rubber hose to the filter. I did mine by slipping the rubber intake tube over the filter. Everybody does it different..
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
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
Thread Starter
|
Senior User
Joined: Jan 2008
Posts: 114
Likes: 0
From: Peyton, CO
I used a piece of 4" od pvc. I bought a 90 deg. elbow and cut the end off, about 3-1/2 to 4" piece, slip 2" inside the filter and the other 2" inside the black rubber hose. You will need to purchase an extra band clamp for the filter side. pics on my gallery
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Dallas -- what year is your truck?? The early 99s need a piece of 4" bent at 120*. I also read where it helps to reverse the intake tube (the end that goes to the stock airbox now attaches to the CCV coupler and vise versa).
If you have a late 99-03, no adapter needed unless you want to. I had mine attached directly to the intake tube, but decided to add the adapter pipe. Although I had no problems without it, I like it better with it. Much more secure.
If you have a late 99-03, no adapter needed unless you want to. I had mine attached directly to the intake tube, but decided to add the adapter pipe. Although I had no problems without it, I like it better with it. Much more secure.
New User
Joined: Apr 2008
Posts: 5
Likes: 0
Dallas -- what year is your truck?? The early 99s need a piece of 4" bent at 120*. I also read where it helps to reverse the intake tube (the end that goes to the stock airbox now attaches to the CCV coupler and vise versa).
If you have a late 99-03, no adapter needed unless you want to. I had mine attached directly to the intake tube, but decided to add the adapter pipe. Although I had no problems without it, I like it better with it. Much more secure.
If you have a late 99-03, no adapter needed unless you want to. I had mine attached directly to the intake tube, but decided to add the adapter pipe. Although I had no problems without it, I like it better with it. Much more secure.
ITS A EARLY 99 BUILD DATE 3/98
I GOT IT DONE I GOT A 4 INCH PICHE CUT IT IN HALF AND WELDED IT IN AN ANGLE AND IT WORKED
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Yes. You get much more noise with the 6637. Some also get a drone that drives them crazy (me). You can fix the drone by building a cold air intake box, but that sucking air sound still shows up more than it did with the stock air box. I also noticed more power at lower RPM's with the 6637.
Senior User
Joined: Apr 2008
Posts: 124
Likes: 0
From: Moberly, MO
I did my mod early this week and love it. I left in the battery box and cold air tube, thinking about moding the front of air tube for more cooler air. But my next step will either be muffler delete or 4" straight pipe so i can let it breathe.
To thinks i went from a 2wd s10 to a 99 f350 4wd crew cab long bed, it think i could of parked my old truck in the back
Here is a site i got my 4" exhaust and constant torque clamps, cheap to!!
Aluminum Intake Tubing 4" OD X 4" Long: Intake Hoses, IntakeTubing, and Intake Clamps
To thinks i went from a 2wd s10 to a 99 f350 4wd crew cab long bed, it think i could of parked my old truck in the back
Here is a site i got my 4" exhaust and constant torque clamps, cheap to!!
Aluminum Intake Tubing 4" OD X 4" Long: Intake Hoses, IntakeTubing, and Intake Clamps