MAF GM systems

[David A. Cooley]

I wonder...
Run the inlet of both turbos to a Plenum and have the 2 sensors in the
Plenum before they vent to the aircleaner...
It was probably rough because one sensor being used is sensing 3 pulses per
2 rev's instead of 6... air flow was probably bouncing up and down and it
didn't know how to handle it.

-----Original Message-----
From: Frederic Breitwieser <frederic.breitwieser at xephic.dynip.com>
To: diy_efi at esl.eng.ohio-state.edu <diy_efi at esl.eng.ohio-state.edu>
Date: Friday, March 26, 1999 12:03 PM
Subject: Re: MAF GM systems


>Aloha MV,
>
>> if you have big cubes and twin turbos, could you put one MAF
>> sensor on each turbo, have the turbos totally separate, say,
>> each turbo pumping into the opposite bank from what's driving
>> it, and make the ECM reference only one of the MAF sensors?
>
>I had tried that actually on the Buick V6... I needed two MAF sensors
simply
>because the twin turbos flowed more than one MAF was going to tolerate, so
I
>split it like you had suggested.  Didn't really work well, especially at
idle
>to 3k RPM range.  Ran rough as hell.  I attempted to create a little
circuit
>to combine the MAF frequencies, summing them, then generating a new
>frequency.  Eeeeeh, didn't work either, didn't start at all.  At least with
>the OEM ECM.  I was trying to lie to it :)  With aftermarket stuff it might
>be much easier.  Just move all the fuel tables up!