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Series I Aftermarket Performance Modifications Discussion of power adding modifications

Maf Limit?

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Old Aug 23, 2005 | 09:51 AM
  #1  
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From: portland oregon
Maf Limit?

What is the ceiling of our MAF?
What CFM does its 5volt top end relate to?
What horsepower would that equate to? Can we just stick it on a flow bench and find the CFM limit?

These are the questions on my mind this week. Anybody know the answers?
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Old Aug 26, 2005 | 06:02 PM
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In a stock car, MAF voltage maxes out around 3.9v.

shiv
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Old Aug 26, 2005 | 06:36 PM
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but its a 5 volt maf so what is the grams per second at 3.9 and what is the scale and limit from there to 5 volts? i guess what im saying is i need a maf table.
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Old Aug 26, 2005 | 08:35 PM
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Originally Posted by zoom44
but its a 5 volt maf so what is the grams per second at 3.9 and what is the scale and limit from there to 5 volts? i guess what im saying is i need a maf table.
Oh ic. I know none of that unfortunately. All I know as that, at redline, a stock car pulls ~3.9v of airflow that the factory MAF. What that corresponse to in terms of grams/sec is unknown. I'd like to get my hands on a factory Mazda diagnostic tool for this reason

Shiv
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Old Aug 26, 2005 | 08:57 PM
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well you should be able to buy a WDS cheap here very soon as they wil be replacing them with a new pda version very soon.
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Old Aug 27, 2005 | 12:59 PM
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you may be able to find the info you need elsewhere.This airflow sensor has been used on a bunch of cars---Mazda 6,Mazda 3 etc(first use I found was a 1999Protege 1.6. The original part no was ZL01-13-215,current part no is L321-13-215.
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Old Aug 27, 2005 | 07:08 PM
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Originally Posted by zoom44
but its a 5 volt maf so what is the grams per second at 3.9 and what is the scale and limit from there to 5 volts? i guess what im saying is i need a maf table.

Ask Hymee, I think he knows how much it flows.
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Old Sep 15, 2005 | 02:20 PM
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bump just to remind me
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Old Sep 15, 2005 | 02:49 PM
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Originally Posted by zoom44
well you should be able to buy a WDS cheap here very soon as they wil be replacing them with a new pda version very soon.

What are the details on that? I'd love to use my PDA as a scanning tool. Thanks
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Old Sep 15, 2005 | 02:52 PM
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Is this really shiv vishnu of vishnu racing posting? Please find some mods for our cars man
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Old Sep 16, 2005 | 09:26 AM
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https://www.rx8club.com/showthread.p...ight=MAF+table
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Old Sep 16, 2005 | 10:50 AM
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yeah i can just go measure it when i have time. what i want is volts vs grams per sec plus what our max voltage is.
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