JakeFusion

iTrader: (7)

This might be a stupid question, but the percentage view of the VE Table in HPTuners aggravates the **** out of me. EFILive allows for you to view the VE table in g/sec. That would be awesome if I could do it in HPT.

subeone

iTrader: (5)

only way to do it would be to setup a histogram with rpm, and map axex, then third value would be calc cylair in g/sec? Not too sure, but iirc the only way g/s is 100% accurate is if your injector data is 100% accurate as well? unless you use the maf mass flowrate readings to populate the VE table.. I could be wrong though not exactly sure.

RedHardSupra

iTrader: (1)

custom pid that uses MAP, MAT, VE, CYLVOL, and a chemical constant for specific air density, charted on the same axis as the normal VE table would do it.

or from fuel consumption, Airmass=AFR*IFR*IPW

better yet, do both and compare, you'll see where and how much your VE is off

joecar

IGL: P.V = n.R.T = (m/M).R.T

rearrange second form of IGL:
m = V.(P/T).(M/R)

where:
m = cylinder air fill(g)
V = cylinder volume(m^3) * VE%/100%
P = MAP(Pa)
T = MAT(K) = corrected/blended IAT
M = average molar mass of air(g/mol)
R = ideal gas constant

JakeFusion

iTrader: (7)

I'll try that. I had looked at it before with the AFR*IFR*IPW but it didn't plot well. I'll give it another try.

I'm using GM Flex Fuel injectors and the data on them is pretty good. Better than the Ford GT500s I had in there before.