a MAF too small

[Dave Zug]

*OR* back to my present conclusion and so far the path I am taking... 

to retain the best resolution situation (doubling it would be bad for 
idle if I can only draw 300 gm/sec) size the additional bypass to the 
size of the additional fuel delivery capabilities. (or vise-versa.. 
size injectors for the air expected to be consumed then size bypass 
for the injectors max.. or for the max fuel expected to be used, 
even if it isnt the fuel capable of being delivered by the injectors 
at static)

I should get to try this by 3 weeks the way things are going.


> > One thing you can try is using two stock MAF's is parallel with the ECU
> > only connected to one MAF (but air flowing through both) and then using an
> > injector twice the size the computer thinks it is. It is VERY important to
> > design the air intake so that the same air flow goes to both MAF's - test
> > it on a flow bench with a voltmeter if possible.
> 
> If that is in fact correct, 0-5V sensor output, one can "sum" the inputs
> using an op-amp, then cut that output in half via another op-amp, then
> you'd have a combined airflow between the two, if you wanted to change
> code.  If not, I'm sure devising an averaging setup of some sort
> couldn't be that hard.  Been a long time since I've done analog stuff.
> 
> -- 
> 
> Frederic Breitwieser
> Xephic Technology
> 769 Sylvan Ave #9
> Bridgeport CT 06606
> 
> Tele: (203) 372-2707
>  Fax: (603) 372-1147
> Web: http://xephic.dynip.com/
> 
> 
Dave Z. www.delanet.com/~tgp