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Pros and Cons of having the stock MAF in blowthrough mode

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Old Apr 29, 2008, 07:07 AM
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Pros and Cons of having the stock MAF in blowthrough mode

What are the pros and cons of having the stock MAF in blowthrough mode? Better drivability? More power?
Old Apr 29, 2008, 07:19 AM
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I didn't think we could make our MAF a blowthrough. To my knowledge the Karman vortex doen't like boost pressure. Also the IAT sensor and the Baro sensor will read different than it normally would causing your load points to change.

So, there would just be cons.... no pros. If the ecu guru's figure out how the ecu gets 2-byte load then you might be able to change the IAT and Baro compinsation tables in the ecu. It doesn't seem feasible in the near future though.

Last edited by Markley02; Apr 29, 2008 at 07:21 AM.
Old Apr 29, 2008, 07:25 AM
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blow through is usually done using a GM MAF and a MAFT. some people leave the Stock MAF in place, but do not use the stock MAF as blow through.
Old Apr 29, 2008, 07:42 AM
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Originally Posted by ecuflasher
What are the pros and cons of having the stock MAF in blowthrough mode? Better drivability? More power?

Like stated, Karmann MAF's don't work in blowthrough. Hotwires MAF's are much better suited, hence GM MAF with MAFT or MAFTPro.
Old Apr 29, 2008, 09:08 AM
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Thanks guys! Learnt something new today
Old Apr 29, 2008, 09:10 AM
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Originally Posted by ecuflasher
Thanks guys! Learnt something new today

learned not learnt. hehe. u learned 2 new things today.
Old Apr 29, 2008, 10:46 AM
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you can pick up a used 3'' gm maf on ebay for less then $50 or from a junk yard. MAFT will run you about $199.00.
Old Apr 30, 2008, 09:12 AM
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Not to thread hi-jack, but I just yanked off my blow thru setup with a GM maf, MAFT, and all the UIC piping. PM me if your looking to go with this setup.
Old May 1, 2008, 12:23 AM
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Originally Posted by evodan2004
learned not learnt. hehe. u learned 2 new things today.
Thank you Sir!
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