6637 or aftermarket cold air

lincolnlocker · Mar 7, 2015

alradco said:
I have a K&N on my 02, would I be better off switching to the 6637?

YES!!

live life full throttle

Magnum PD · Mar 7, 2015

If you got the spray oil on the filter kind,

Take it out of the truck, find some gasoline, soak the K&N throughly with it, make sure it's in a open place and throw a match on it. Watch it burn and rest easy knowing you saved your engine from getting dusted.

Kae006 · Mar 21, 2015

Jody @ DP recommended I stick with the stock intake. His exact words were "Keep the stock air box if it is not damaged since it flows more than the 6637". What is everyone else's opinion on that?

ToMang07 · Mar 21, 2015

6637 and be done with it. Any other advice is meant to sell you something. No sense reinventing the wheel.

ToMang07 · Mar 21, 2015

Kae006 said:
"it flows more than the 6637". What is everyone else's opinion on that?

Jason · Mar 21, 2015

The stock airbox works fine, as long as it's not broken. I'm still running mine, and will continue to. Hell...I'm still running the stock exhaust.

96stacked&smoken · Mar 21, 2015

Yea no way a stock intake outflows a 6637, or even filters as well.

Magnum PD · Mar 21, 2015

The stock is made to keep the air clean, not for high preformance.

lincolnlocker · Mar 22, 2015

Kae006 said:
Jody @ DP recommended I stick with the stock intake. His exact words were "Keep the stock air box if it is not damaged since it flows more than the 6637". What is everyone else's opinion on that?

more then likely he was looking at cfm but everyone has made more power with a 6637 then a stock box.. like i have said a million times, golfer at swamps has made over 800 fwhp with a donaldson filter... stock airbox makes about half that i think!

live life full throttle

Arisley · Mar 22, 2015

Prior to hearing about the 6637, I was using zip ties on my stock air box to keep it sealed.

With stock or near stock, it is fine. When you start using a lot of fuel running a turbo that sucks a lot of air, the stock box will not keep up.

lincolnlocker · Mar 22, 2015

Arisley said:
Prior to hearing about the 6637, I was using zip ties on my stock air box to keep it sealed.

With stock or near stock, it is fine. When you start using a lot of fuel running a turbo that sucks a lot of air, the stock box will not keep up.

but it doesn't pull the minder in the stock box so its fine.......

live life full throttle

gnxtc2 · Mar 22, 2015

Where are guys buying an authentic Donaldson filter from? What is the correct part number?

When I was running a K&N filter, the silicon numbers in my oil samples came back good.

I'm running an open AFE filter currently.

Billy T.
[email protected]

Arisley · Mar 22, 2015

Go to O'Reilly's as for a Wix 46637. When you take it out of the box, the filter will have a little sticker on it that says Donaldson 6637.

gnxtc2 · Mar 22, 2015

There are no O'Reilly's in my area (NJ-NY-CT).

Billy T.
[email protected]

ToMang07 · Mar 22, 2015

Arisley said:
Go to O'Reilly's as for a Wix 46637. When you take it out of the box, the filter will have a little sticker on it that says Donaldson 6637.

Interesting. I'll have to check that out. Only place (locally) that carries a 6637 around here is NAPA, and they want something like $90 for a non-donaldson one.