Thread: Z32 maf voltage

Q values represent relative mass flow rate and are unit-less. Take a look at this page for HP vs mass flow rate info: Technical Database - Engine
although I don't claim to know that it is correct.

Bringing back an bit of an old thread - was searching for something
else, found this, decided to add a data point...

4.05v peak MAF on DynoDynamics (with Dynojet correction factor)
= 246whp - 50 lb MSD peak = 71.7%

Same car, different turbo, intake, exhaust, NOT on dyno:
4.25v peak MAF ???whp - 50lb MSD peak = 80%
4.309v peak MAF ???whp - 50lb MSD peak = 85%
4.49v peak MAF ???whp - 50lb MSD peak = 95%

Interpolating the Z32 VQMAP, based on 5.12v = 500whp,
and percentages of airflow:
4.05v = 238.2hp *pretty close to 246whp dyno above
4.52v = 335.6hp
4.77v = 398.2hp




The table I found for the Z32 VG30DETT MAF shows:
4.00V = 30042
4.48V = 42772
4.56V = 45232
4.72V = 50466
4.80V = 53247
Not saying either one is right or wrong - not sure why there's a discrepancy?

Coheed, how much boost were you running at the time?
this is good info for me since Im going to use a maf voltage activated meth injection, but since I will tune on the street using wideband I dont know the whp, but Im going to need the maf voltage vs boost so the meth will activate at certain psi vs voltage, or at least close to it...

I get about 4.15v with 520's at 75%

That is right in line with the data points I posted above.
The interpolating from the spreadsheet I have says 256.9hp for 4.15v.
Same setup as your sig - 252hp? If so, the spreadsheet is pretty close.

you can change value points on the maf scale. voltage to q value. can actually make the car read more air to a certain extent

Here you go guys..



Found this loooong time ago on a forum. Dont know how accurate it is, but you got the picture.
But remember flow doesnt have to cope with your whp output since factors as A/F, cilinderpressure, wheels, pullies etc. are all part of the game to your final whp output.

Im running a 2871 0.86 .56 trim at 1.3 bar and get 4.53V and 71% on 740's.
Coheed runs 83% on 740's at 380whp so that makes mine at 325whp. 4.53V reads 330ish whp, so that should be about right I reckon (this is RWD sr20 S13 that is..).

Do you know what the numbers in each column represent?

? - Voltage - ? - Percentage of capacity - Whp output

Obviously... but its not mine.

Z32 MAF VQ TABLE