Techsalvager

So I know how much grams a second to expect the engine to consume at idle and tune the maf transfer function correctly for maf mode to work correctly.

Techsalvager

so I knew how much grams a second at idle was gonna be

richyvrlimited

iTrader: (1)

But if it's plugged in and logging, doesn't that tell you the answer?

Techsalvager

why would it, all that would tell me is voltage\frequency at idle not grams a second at idle

Joe Perez

iTrader: (8)

Typically, the B engines draw around 4.5 - 5.5 grams / sec at idle in a stock configuration.

So, now that you possess this information, what fabulous thing will you do with it?

Techsalvager

I can see that if it with accessories running. mine is around 2.x to low 3s.

Nothing, I;ve had the info for a while now, have a way to find out mass flow at various engines speeds\loads

triple88a

iTrader: (2)

I am guessing people are not well familiar with the maf as with map. In comparison it would be like taking a map sensor, not calibrating it or anything, just installing it and running it. Tech wants to calibrate it before he tunes it.

Techsalvager

Well its fairly easy to calibrate a map sensor if you have another one to go buy or a way to make pressure\vacuum and you will know pretty much its gonna be in that general area. Also if you know the low voltage and high voltage areas of a map sensor output then you know the transfer function of a map sensor as they are linear output.
Maf not so much as the installs can easily change the curve, and they are non linear output.

Anyways just to finish this thread my answer I sought for I had finally came across and is noted in here how to find out. For anyone else that later on looks and needs help.
https://docs.google.com/document/d/1...li4/edit?pli=1

Joe Perez

iTrader: (8)

This thread is an interesting combination of trolling and over-thinking the subject.

Trolling because no civilization which has advanced beyond fire and the wheel concerns itself with mass flow in absolute units.

Over-thinking because it's not necessary to attempt to predict every possible operating condition when we have the ability to observe the engine's operating AFR with the use of an EGO sensor and plot trends using spreadsheet software.

Techsalvager

not sure where you get over thinking from but ok.