6637 Alternatives?

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Mar 18, 2010 | 09:15 PM

#31

CobraGT40

Tuned

Joined: Mar 2005

Posts: 493

Likes: 13

From: Aurora, Iliinois

My K&N Filter has let in a bit of dust....there's evidence of it in my intake tube. I ordered a Wix 6637 from Fleetfilter delivered for approximately $40. Does the AFE Washable filter keep the dust out ? ALL of it ? And will it attatch to the K&N Cold-Air intake tube ? If I can find a re-useable filter that keeps my intake free of any and all dust, I think it justifies the extra $...

Thanks !

Scott

Mar 19, 2010 | 01:13 AM

#32

Neil64

Senior User

Joined: Feb 2007

Posts: 424

Likes: 0

Oil

Does the AFe come preoiled? I have some old K&N spray oil. Is that what is used? I assume that you also have oil the inside of the inverted cone?

Is this the same Pete's PreCharger that fits the 6637 or is it different? I have been using pantyhose as a precharger on my 6637 and maybe it is time to move up a notch!.....lol

Mar 19, 2010 | 02:26 AM

#33

Stewart_H

Super Moderator

Joined: May 2004

Posts: 29,380

Likes: 118

From: Central Coast of CA

Quote:

Originally Posted by N V US Lawn Care

NVM...found it...$93 huh...holy crap...i think i'll go with the 6637...

Clay has it for $89 bucks. Riffraff Diesel: AFE "Big Boost" BHAF Washable Filter

Quote:

Originally Posted by Neil64

Does the AFe come preoiled?

Yes.

Quote:

I have some old K&N spray oil. Is that what is used? I assume that you also have oil the inside of the inverted cone?

AFE uses their own oil formula. And you spray the inverted part of the filter the same way you spray the rest of the filter. On the outside.

Quote:

Is this the same Pete's PreCharger that fits the 6637 or is it different? I have been using pantyhose as a precharger on my 6637 and maybe it is time to move up a notch!.....lol

The AFE Big Boost uses a different pre-filter. The one Pete makes for the AFE is inverted on the end to fit the inverted cone. The 6637 doesn't have the inverted cone on the end.

I had an AFE stage 1 on my truck, but pulled it when I added the 38R because the stage 1 couldn't keep up with the demand of the 38R.

The Big Boost has zero problems keeping up.

Stewart

Mar 19, 2010 | 02:53 AM

#34

Neil64

Senior User

Joined: Feb 2007

Posts: 424

Likes: 0

Oil Analysis

Has anyone done a oil analysis while using the AFE? How about checked for dusting? I was a proponent of K&N prior to buying my truck and researching info on this forum. Now all of the K&Ns are now sitting on a shelf and I am back to using paper filters in every vehicle. I have read that AFE filters better but I want to make sure that the cotton doesn't get sucked or moved during high boost.

Also, does required boost increase for a certain speed when a filter is dirty or is it the other way around? In other words, with a clean 6637, on level road @ 70mph, truck makes around 5lbs of boost. Now truck makes 6-8lbs on the same roads @ 70mph. Would/could that be an indicator of a restricted filter? I have 16K on the filter driving on roads in Maryland. No dirt roads. Going to build a boost leak detector if all goes well this weekend. Only change is a rebuilt tranny and tq converter (which I am leaning towards as the cause). Truck ran normal boost before rebuild but it is possible the 6637 got wet as the tranny shop yahoos may have left the hood up while it was raining.

Thanks...

Neil

Mar 19, 2010 | 05:41 AM

#35

bdrummonds

Post Fiend

Joined: Sep 2006

Posts: 5,584

Likes: 0

From: Millbrook Alabama

I had an oil analysis done 10K after getting the AFE. my silicone levels were at 4. With my old paper 6637 my silicone levels were at 5. I am having an UOA done in the next week or so, and the filter will have about 50K on on it. I will post up my findings, when the report comes back.

A clogged or dirty filter means less boost. Boost is the compression of air, by the turbo. If there is no clean air flow, the turbo has less air to compress, thus lower boost.