6637 gains? - Ford Powerstroke Diesel Forum
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post #1 of 59 Old 07-03-2012, 06:47 PM Thread Starter
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6637 gains?

I'm thinking about putting a 6637 filter in and was wondering what kinda gains you guys are getting.


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post #2 of 59 Old 07-03-2012, 09:51 PM
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huge ones, well worth it, what are you running now? i could instantly notice throttle improvement, and could hear the sweet sound of the turbo whistle

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post #3 of 59 Old 07-03-2012, 10:13 PM
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Originally Posted by 351fifty View Post
huge ones, well worth it, what are you running now? i could instantly notice throttle improvement, and could hear the sweet sound of the turbo whistle
X 2.... just do it and never look back. Your truck will thank you.


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post #4 of 59 Old 07-03-2012, 10:14 PM Thread Starter
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Well I found a k&n intake for like a silverado that I had laying around. I cut the tube down a little and put the filter on and it works ok, not huge gains but did notice the sweet turbo sound. I think it's not getting enough air through the filter cause it's only like 8" long and the biggest part is like 6".


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post #5 of 59 Old 07-04-2012, 05:12 AM
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Holy****. Sometimes I feel like I"m in the Twilight Zone.

Take of the k&n; it will dust your turbo and your. Not to mention, there isn't one k&n made that will flow enough for our diesels.
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post #6 of 59 Old 07-04-2012, 07:01 AM Thread Starter
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Ok so I'm gonna buy it today! Thanks for the input!


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post #7 of 59 Old 07-04-2012, 07:03 AM
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No problem. Before you buy it, cross referance the 6637 at your local napa because sometimes they are cheaper than fleetfilter is.
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post #8 of 59 Old 07-04-2012, 10:13 PM
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my first filter was a fram ca8037, thing worked great honestly, and has an 850 cfm rating iirc, which is the same as our turbo's are, i noticed good gains with it as well, but when a buddy game me a free AFE intake and 6637 filter i immediatly used it instead, and works even better.

-Kris-
2000 excursion V10 2wd 230k
2000 Excursion 7.3 4x4 246k
1995 CCLB DRW 324K
2001 CCLB DRW 319K
Dp tuner infinity, exhaust, intake, chipped, tricked, and wrecked
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Quote:
Originally Posted by marine5811
The stock downpipe in an OBS is flat because I'm a ginger.
Quote:
Originally Posted by alberta 7.3
Finding a decent woman is like shopping for a used truck. You spend most of your time picking through the money pits, wrecks, and basket cases until you find one that you can tolerate
Quote:
Originally Posted by JJFLASH
Well at least you caught the loose bolts before they cause any damage. Nothing worse than a sloppy hole
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post #9 of 59 Old 07-05-2012, 10:11 AM
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Quote:
Originally Posted by 351fifty View Post
my first filter was a fram ca8037, thing worked great honestly, and has an 850 cfm rating iirc,
The WIX equal to the Fram CA8037 has a flow rate of 250 CFM. I'd say its a safe bet that the Fram one does too.

FRAM - Part Details
Wix 46441 & Napa 6441 Air Filter: FleetFilter Secure Online Store


I'd recommend the AFE Big Boost filter if you are doing the DIY air filter or if you are going to run a Tymar kit. The AFE Big Boost is rated at 850 CFM, which are turbos are rated for 750 CFM per Beans.

1997 F-250HD Extended Cab 4x4 7.3 Powerstroke
3" Down Pipe to 4" Exhaust (Stainless) ~ Tymar Intake w/ AFE Big Boost Filter ~ TS 6 Position Chip ~ HPOP Cross Over Line ~ Regulated Return ~ E-Fuel System ~ Intercooled ~ CCV Mod ~ Dual Aeroforce Interceptor Gauges ~ Dana 60 Swap

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post #10 of 59 Old 07-05-2012, 10:35 AM
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Quote:
Originally Posted by mjonesjr View Post
The WIX equal to the Fram CA8037 has a flow rate of 250 CFM. I'd say its a safe bet that the Fram one does too.

FRAM - Part Details
Wix 46441 & Napa 6441 Air Filter: FleetFilter Secure Online Store


I'd recommend the AFE Big Boost filter if you are doing the DIY air filter or if you are going to run a Tymar kit. The AFE Big Boost is rated at 850 CFM, which are turbos are rated for 750 CFM per Beans.
I agree... I dont think that fram can flow nearly enough for our motors. I've tried researching that filter and couldn't pull up any flow stats.
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