Subject	Airflow to voltage isn't a linear relationship.
Posted by	Jehannum on August 13, 2012 at 7:34 PM
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In Reply To	Getting closer to finishing the MAF signal converter. posted by DVDBURN (MD) on August 12, 2012 at 10:12 PM
Message	It's not as simple as adding the two voltages to get the right output. I don't have any data for the Z32 MAF, but the Q45 MAF is a reasonable example. So, if you double the outputs at 1.5V (where airflow is ~17G/s), you present the ECU with a value of 3.0V (where the airflow is ~125G/s). You need a better functional map of the MAF before that approaches a working model. --------------------------------------- Your powers are useless! I'm wearing my tinfoil underwear! I will not shop at AMS. AMS steals designs from hardworking Z32 enthusiasts and screws them out of work in a tough economy. I am boycotting, how about you? 2012 Albuquerque Z-car club President
Follow Ups	Getting closer to finishing the MAF signal converter. - DVDBURN (MD) 22:12:43 08/12/12 how about a trim to adjust for different size MAF tubes - FuerGrissa 22:27:05 08/12/12 Sort of related... - DVDBURN (MD) 19:59:15 08/13/12 Arduinos are fun. I wrote a lib to interface with ODB port - Crim 22:30:10 08/12/12 That's neat and thanks for the link. - DVDBURN (MD) 23:14:14 08/12/12 Hmm not handy... - Crim 23:53:30 08/12/12 Nice - thanks for the link. (n/m) - spicyZ 09:20:53 08/13/12 I'm thinking about using one to make a neat little interface - BigTDogg (MA) 09:56:43 08/13/12 drop me a note (n/m) - spicyZ 08:15:54 08/14/12 Cool! (n/m) - BoneZ (MD) 22:32:58 08/12/12 Re: Getting closer to finishing the MAF signal converter. - smartone 22:45:42 08/12/12 nice! - aliaZ 23:30:10 08/12/12 cool my safc did that like a billion years ago... - Dane (Houston) 23:34:59 08/12/12 Ur a great addition to this community. Great job (n/m) - LivinTheDream 00:38:36 08/13/12 Was just about to email you to check for an update. - treese88 08:37:59 08/13/12 Maybe I'm not remembering correctly but with my apexi neo - Evan_Wright (Ca) 10:50:08 08/13/12 You are correct, but DVDBURN has taken that into account. (n/m) - Antihero 15:38:36 08/13/12 Doesn't appear so in the screen shots he posted but cool if - Evan_Wright (Ca) 16:14:00 08/13/12 good point.. - Antihero 17:48:00 08/13/12 Re: good point.. - Antihero 19:58:34 08/13/12 Averaging is correct. - DVDBURN (MD) 19:57:08 08/13/12 averaging is certainly not correct. (n/m) - Antihero 20:00:12 08/13/12 eh...not so sure about that - aliaZ 06:44:54 08/14/12 VG map? And why wouldn't it be a simple average? (n/m) - BigTDogg (MA) 08:31:26 08/14/12 the relationship of MAF voltage and flow are not linear - aliaZ 08:40:37 08/14/12 Right, but if you read... oh NM, just did it in my head - BigTDogg (MA) 08:52:24 08/14/12 Thanks for your help and the email. - DVDBURN (MD) 11:53:24 08/14/12 same sort of deal for ADD - aliaZ 12:28:29 08/14/12 Will I need to wrap my HID's in aluminium foil? (n/m) - fuzzymonkey 11:44:36 08/13/12 Hopefully not. - DVDBURN (MD) 20:25:23 08/13/12 Airflow to voltage isn't a linear relationship. - Jehannum 19:34:18 08/13/12 I have always wanted one that has the ability - Spectrum (WI) 23:14:09 08/13/12 why not just use a blow through MAF after the BOV? (n/m) - aliaZ 13:04:05 08/14/12
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