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TheForeigner
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Post subject: 76mm APS Shorty MAF Scaling?  Posted: Sat Jan 31, 2015 1:23 am |
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Joined: Thu Mar 13, 2014 8:13 pm
Posts: 5
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I'm looking to work on a base tune for my 08 USDM WRX with an APS 3" Shorty Intake. I was wondering if anybody had a spare set of 76mm MAF scalings laying around that I could work on. I know theres an equation to figuring out the multiplication factor from the stock intake, so if anybody has any information on that either, would be much appreciated. Thanks!
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TheForeigner
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Post subject: Re: 76mm APS Shorty MAF Scaling? Posted: Sat Jan 31, 2015 1:36 am |
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Joined: Thu Mar 13, 2014 8:13 pm
Posts: 5
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So I started doing my math...
For 66mm Intake:
3.14 x 33^2 = ~3420mm^2
For 76mm intake:
3.14 x 38^2 = ~4534mm^2
So that is an increase from 3420 to 4532, 33% percentage wise. So under what multiplier does the 33% fall under. I remember this being somewhere in my high-school algebra curriculum. Guess this shows how much I payed attention...
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TheForeigner
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Post subject: Re: 76mm APS Shorty MAF Scaling? Posted: Sat Jan 31, 2015 9:34 am |
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Joined: Thu Mar 13, 2014 8:13 pm
Posts: 5
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After realizing that the answer was right in front of my face, I took the liberty of creating a base MAF scaling based off the stock flow rates for an 76mm MAF intake. If anyone has any corrections for it, be my guest. Hopefully this helps someone like me...
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