6637 Filter
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Elder User
Joined: Sep 2004
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From: Helotes, Texas
6637 Filter
I know a lot of people are using the 6637 filter, but I was wondering if anyone knew of a smaller filter (outside diameter and length). Still want the 4" outlet. I want to replace the K&N cone filter in my FIPK, but the 6637 won't fit. Thanks for any help.
Max
Max
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Joined: Oct 2004
Posts: 4,738
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From: FL
do you have the stock rubber hose?? stick it on there and make on of these, flows alot better than K&N FIPK.....IMO... 6637, Sch. 40 PVC 45* w/ flanges cut off, and a 4" pipe coupling is all you need... good luck!!
-Robb
-Robb
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Elder User
Joined: Sep 2004
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From: Helotes, Texas
Really want to keep the FIPK, that's why I'm looking for a smaller filter. I'm also in the process of designing a cold air intake set-up for each type of PSD setup and the smaller filter would be a lot easier to work with.
Max
Max
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Elder User
Joined: Sep 2004
Posts: 824
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From: Helotes, Texas
You guys aren't helping any, lol. Just kidding, try using a 4" exhaust 45 degee fitting from a big truck parts house. We have done several like that and they really work well. Still looking for a filter though...
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