Voltage to Maf
Thread Starter
Racer
Joined: May 2004
Posts: 270
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From: NORFOLK VA.
Originally Posted by Mo_Bandy
Mr. Kidd,
There is no chart that I am aware of... the MAF generates a voltage that is converted to a frequency for the ECM.
Mo
There is no chart that I am aware of... the MAF generates a voltage that is converted to a frequency for the ECM.
Mo
Melting Slicks
Joined: Dec 2000
Posts: 2,719
Likes: 60
From: Fremont Oh
Unfortunately no...
the easiest way to do a data log to get the gms/sec of the MASS but it would only tell you the gm/sec per rpm then you would have to look up the frequency...
A MAP would be easier to go from voltage to say KPA.
What are you trying to calculate? Perhaps I can help...
Mo
the easiest way to do a data log to get the gms/sec of the MASS but it would only tell you the gm/sec per rpm then you would have to look up the frequency...
A MAP would be easier to go from voltage to say KPA.
What are you trying to calculate? Perhaps I can help...
Mo
Pro
Joined: Sep 2001
Posts: 542
Likes: 1
From: Stuck in the 80's
In tunerpro my MAF tables are x axis: voltage y axis: grams/sec, with grams/sec being the variable. I have not touched them yet, but getting close to playing with table 1 to see what happens at idle.
My scan tool shows MAF as a number in the thousands and then a parameter next to it called MAFLSB which is a two digit number. LSB =Least Significant Bit?
Corresponding as such MAF 4227 MAFLSB 16, MAF 4430 MAFLSB 17, MAF 5347 MAFLSB 20, MAF 13096 MAFLSB 50, etc. Appear to be a somewhat linear correlation, but I don't know much more than that at this point.
$32b
My scan tool shows MAF as a number in the thousands and then a parameter next to it called MAFLSB which is a two digit number. LSB =Least Significant Bit?
Corresponding as such MAF 4227 MAFLSB 16, MAF 4430 MAFLSB 17, MAF 5347 MAFLSB 20, MAF 13096 MAFLSB 50, etc. Appear to be a somewhat linear correlation, but I don't know much more than that at this point.
$32b
Melting Slicks
Joined: Dec 2000
Posts: 2,719
Likes: 60
From: Fremont Oh
Mr kidd,
This i what I use and it seems to be pretty close,
Maf lbs/min * 14 = CFM
CFM/ 1.5 + Approximate HP
Gbody,
It's good to know tunercat gives the MAF voltages I use Autotap which does,t do that I it only gves gm/sec and lbs/min
I did something simular. I looked at my fuel trims under idle cruise and everythign up through WOT used the precentages and was able to ajust the MAF to where it is +/- about 3 % from idle through I think it' around 13K using LT1 edit. I was getting MAF 103 errors with the supercharger...
I exported the logged runs to a spead sheet and continued until I got a good curve.
Mo
Mo
This i what I use and it seems to be pretty close,
Maf lbs/min * 14 = CFM
CFM/ 1.5 + Approximate HP
Gbody,
It's good to know tunercat gives the MAF voltages I use Autotap which does,t do that I it only gves gm/sec and lbs/min
I did something simular. I looked at my fuel trims under idle cruise and everythign up through WOT used the precentages and was able to ajust the MAF to where it is +/- about 3 % from idle through I think it' around 13K using LT1 edit. I was getting MAF 103 errors with the supercharger...
I exported the logged runs to a spead sheet and continued until I got a good curve.
Mo
Mo
