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Old 01-15-2008, 07:16 PM   #1
Bike Psyco
Scooby Newbie
 
Member#: 166159
Join Date: Dec 2007
Chapter/Region: MWSOC
Location: Forest Lake, MN
Vehicle:
2002 Wrx wagon
black

Default Rescaling MAF question

I have read all about the intakes and how they change how the senser senses the air flow. The WRX I have came with a Short ram inake, I do not know who makes it. I have done logging and from what I can tell, there does not seem to be any turbulance bothering the senser. I am wondering what is the stock intake diameter where the senser is, and what kind of air flow change there is for different diameters... IE, the math for rescaling the MAF?
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Old 01-16-2008, 01:15 AM   #2
a6n6d6y
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Member#: 123347
Join Date: Aug 2006
Chapter/Region: NWIC
Location: SEATTLE
Vehicle:
1993 POS
burgandy legacy

Default

65 mm is the stock maf tube diameter

there's was a really good thread about this subject but I cant find it now

nasioc member "jays05" authored it I used it to start when I tuned my perrin bigmaf

the threads gone or the search engine is broke

here's another one I had found thats great as well

http://forums.nasioc.com/forums/showthread.php?t=608153

Last edited by a6n6d6y; 01-16-2008 at 01:35 AM.
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Old 01-16-2008, 01:56 AM   #3
williaty
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Join Date: Sep 2004
Chapter/Region: MWSOC
Location: Licking County, Ohio
Vehicle:
2005 2.5RS Wagon
Regal Blue Pearl

Default

Here's the HOWTO I just wrote about MAF Scaling: http://forums.nasioc.com/forums/show....php?t=1427448

First thing to do is to see if you even need to bother. Do the logging and the analysis/graphing. If your numbers come out close to 0, leave it alone.
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