Kwik air filter mod
Lead Driver
Joined: Oct 2004
Posts: 7,413
Likes: 1
From: Columbia, MO
Originally Posted by DaveWilliams
I just did the KWIK filter mod today along with the CCV mod. I used a 4 inch exhaust tube with a 45* bend in it, and cut off one side a little shorter then the other for overall length. When I put it into the rubber tube that connects to the turbo then put the filter on the other end, it really presses up against the master cylinder and I am afraid it might damage the master cylinder if the engine moves during twist or torque. In my opinion, the smooth metal tubing would flow better than the orginal rough rubber tubing.....maybe? If I can't get it better situated I may make some short metal connections and just connect the filter to the stock tube and use that....Any opinions on what I may have done wrong cause it just doesn't seem to fit right.....Thanks for any help...Dave
Elder User
Joined: Jan 2006
Posts: 649
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From: Charleston SC
Logical thing to do
You're right...the safe and logical thing would be to do the short connecting pieces like you did and eliminate the metal tube. If you look in your gallery on the 3rd pic in the filter group, where you show the detail of the intake side of the filter, I even trimmed the bottom of the box to try to get the intake end of the filter to lay down a little flatter but the metal tube butts up against the insulated metal tube that comes toward the front of the truck. I see why it has the little curve up and over that pipe in the stock rubber piece. Will get that done this afternoon and eliminate all the problems....Thanks for your help....Dave
Post Fiend
Joined: Jul 2005
Posts: 14,582
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From: 21791
i believe your problem is that the 45* bend is too sharp. i would try using a 22* bend, which is half as sharp as the 45*. it SHOULD put the filter in the near-stock location.
Last edited by IB Tim; Feb 20, 2006 at 01:47 PM.
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Senior User
Joined: Jan 2006
Posts: 344
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From: Reno, Nevada
The CCV mod is that elimnating the breather from the valve cover into the stock intake tub? Im sure thats why I had oil reisdue all in my intake tubs. Which Im glad I am being it caught a lot of that dust that made it past this junk stock box and into the intake tubes and Im sure into my engine 
truck had 61,000 when I bought it. So Im not sure if the stock box was used with it the entire time or not. Anyway back to the CCV Mod I assume from the information I have gathered that it is actually that . If so what do I do with line from the valve cover? I have read some leave it hanging into open and others routing it into there exhaust? If I do that wont it burn off that oil residue causing some excesive exhaust smoke?
truck had 61,000 when I bought it. So Im not sure if the stock box was used with it the entire time or not. Anyway back to the CCV Mod I assume from the information I have gathered that it is actually that . If so what do I do with line from the valve cover? I have read some leave it hanging into open and others routing it into there exhaust? If I do that wont it burn off that oil residue causing some excesive exhaust smoke?
Last edited by PoWeRsTrOkEdF250; Feb 19, 2006 at 06:41 PM.
Elder User
Joined: Jan 2006
Posts: 649
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From: Charleston SC
Tried everywhere
Thanks for the correction on the angle. I had read in several places here it was supposed to be a 45* and honestly I looked at all the truck places and exhaust places here in Charleston SC and only one "hotrod" shop carries 4 inch pieces. I had only 3 choices in 4 inch......all were 45* bends with varying lengths. I got the longest one and shortened one leg to get the length right but since it was the wrong angle to begin with, I cut in half, the part I removed from it and it seems to be a good patch for were the CCV dumped into and to connect the stock tube to the filter, but soon I do want to replace the rippled stock tube with smooth metal...Thanks again..Dave
Post Fiend
Joined: Jul 2005
Posts: 14,582
Likes: 12
From: 21791
Originally Posted by PoWeRsTrOkEdF250
The CCV mod is that elimnating the breather from the valve cover into the stock intake tub? Im sure thats why I had oil reisdue all in my intake tubs. Which Im glad I am being it caught a lot of that dust that made it past this junk stock box and into the intake tubes and Im sure into my engine truck had 61,000 when I bought it. So Im not sure if the stock box was used with it the entire time or not. Anyway back to the CCV Mod I assume from the information I have gathered that it is actually that . If so what do I do with line from the valve cover? I have read some leave it hanging into open and others routing it into there exhaust? If I do that wont it burn off that oil residue causing some excesive exhaust smoke?
truck had 61,000 when I bought it. So Im not sure if the stock box was used with it the entire time or not. Anyway back to the CCV Mod I assume from the information I have gathered that it is actually that . If so what do I do with line from the valve cover? I have read some leave it hanging into open and others routing it into there exhaust? If I do that wont it burn off that oil residue causing some excesive exhaust smoke?
Posting Guru
Joined: Aug 2004
Posts: 1,130
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From: Rural Central Ohio
Originally Posted by strokin_it7.3
so it does prove that the exhaust flow creates a pressure drop at the outlet which in turn pulls the gasses out of the tube.
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Joined: Feb 2006
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Lead Driver
Joined: Oct 2004
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From: Columbia, MO
Generally, the K&N is not reccommended for this truck. Especially if you just go with a drop-in replacement. I'm sure their big cones might filter ok, but if you're going to have a big filter, why not go cheaper and filter better with the NAPA 6637.
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Joined: Jun 2005
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From: Vancouver, WA
Originally Posted by jtharvey
Generally, the K&N is not reccommended for this truck. Especially if you just go with a drop-in replacement. I'm sure their big cones might filter ok, but if you're going to have a big filter, why not go cheaper and filter better with the NAPA 6637.
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Joined: Feb 2004
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Just something to be aware of, with the 6637 and stock turbo, if you pull or haul any loads you will get turbo flutter. Had this happen last week and removed the 6637 until I can afford the ATS housing. Not one of those new sounds that I wanted to hear. Sure did make the boost gauge jump around also.
Posting Guru
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From: Rural Central Ohio
jsmahan, I believe you are hearing "surge" also since you specify that your gauge is jumping around. Surge and flutter sounds definitely aren't good though. The 6637 doesn't cause this nor does it fix it. The big filter is just letting you hear the noises and the stock airbox just muffles it. The WW will fix it most of the time but to never hear it again you'll need the ATS.
Last edited by edub32; Feb 20, 2006 at 03:34 PM.