Change Mass Airflow Meter

[brisz]

Would like to confirm an option in the "Change Mass Airflow Meter" utility.

Is the tick box "Halve values during translation" for using a dual intake with MAF on only only half the intake.

I'm sure I read it some where and have searched all documentation, is this what it is for ?

[Matt]

It was a feature request added but not yet documented

Its for putting in VQ maps to the BNR32 GTR Skyline which uses twin intake but required to chip the VQ map in half when using Z32/Nismo MAF

[brisz]

So when installing a "Doolz" type intake on a Z32 this should adjust the Z32 ECU to suit a dual intake where the Z32 MAF is only looking at air intake for one bank (half), this utility will take the reading from half the air intake and rescale to suit overall needs ?

http://www.ashspecz.com/ashspec/doolz/doolz.htm

Sorry to ask the same question again but I just need clarification on this.

Regards,

John

[brisz]

Hmmmm i will take that as a yes. lol

After reading through your reply it seems to say that, but I was very tired when I read it.

Many Thanks

[Matt]

http://ecu2.forumwise.com/ecu2-thread1821.html

dont use this on Z32 see above

>> do you just hook up two airflow meters and bridge their signal wires?

easiest way is to use an Apexi AFC/Neo
it will support input of two AFM's and will have 1 signal output.
You can have the Apexi add or average the signal of the AFM's

>> and if Eric could link to his program from here that would be cool

http://300zx-twinturbo.com/temp/rom_rescale.1.1.exe

>> or give a rundown on what changes and why for the K val

2 intakes, 1 afm: K x 2
2 intakes, 2 afm + AFC in ADD mode: K x 1
2 intakes, 2 afm + AFC in AVG mode: K x 2

this only applies to twinturbo setups, with seperate intakes

>> apart from the ecu having two physical inputs - how different is the gtr method of dual afm's?

it basically does the same as the AFC, but it's internally handled by the ECU.