FW: MAF Upgrad

[TBK]

Why not mount both and read the signal from just one and double it.
Frequency doubler. or Voltage doubler.

TK
-----Original Message-----
From: lkurek at smtpgate.anl.gov <lkurek at smtpgate.anl.gov>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Monday, February 23, 1998 3:29 PM
Subject: Re: FW: MAF Upgrad


>
>     Now this is a cool idea!
>
>     I could get an elbow (tee) fabricated that has one MAF going off to
>     the left, and another to the right, with dual K&N's hanging off either
>     side. Sure would look nice and run much better....
>
>     Now, how would we go about building this "interface" box? I would
>     assume all it would take is some circuit to do a simple averaging of
>     the MAF sensor output (assuming it is a rising voltage type circuit).
>     If it was a wave output, wouldn't you have to synchronize and add the
>     two frequencies together to generate a sum?
>
>     Just wondering....
>
>     TTYL!
>
>     Larry Kurek
>
>
>______________________________ Reply Separator
_________________________________
>Subject: FW: MAF Upgrad
>Author:  <diy_efi at efi332.eng.ohio-state.edu> at Internet
>Date:    2/23/98 1:33 PM
>
>
>
>How about running two MAF sensors in parallel?
>I'm sure you'd need some kind of happy box to interface the two
>and send out an integrated signal.  If there were enough interest,
>this could be a source of income for somebody ...
>
> Dave
>
> ----------
>From:  Peter Fenske
>Sent:  Monday, February 23, 1998 4:42 AM
>To:  diy_efi at efi332.eng.ohio-state.edu
>Subject:  Re: MAF Upgrad
>
>Hi Larry
>
>I have looked at using the LT1 maf on my 86 MAF.
>The LT1 is FM vs the 86 Bosch analog.
>
>Several people have used the Porsch Mafs bigger but mucho dollaro
>And it is just a small matter to modify correction a wee bit.
>
>The LT1 FM is possible since the V8 TPI code has an appendage
>left over from the V6 FM maf. Most of the freq handling code
>is there. The tables would have to change a bit.
>
>However with the 89 with Vats there is a wee problem.
>The Vats freq measuring pin is used by the V6 to measure
>maf frequency. So you would lose your Vats a terrible thing.
>
>Anyways the software is quite a mess. Just saying it could be
>done..
>
>And MAP ain't too bad.
>
>In addition there is provision for N-alpha in the code
>Ie rpm and tps. This is the backup code section
>for the Maf
>
>later:peter
>
>>
>>      MAF is a better system theoretically than a MAP system. The reason
>for
>>      this is that you are MEASURING airflow/density rather than
>calculating
>>      it. In practice, a MAF system is harder to package and there is an
>
>>      inverse relationship between peak airflow potential of the MAF and
>its
>>      accuracy. The stock GM 3" sensor (i.e. 85-89 TPI) is fairly
>inadequate
>>      for a healthy motor (325+hp)...it just won't flow enough air. If I
>
>>      could somehow get a late model 3.5" MAF to work with my 89
>>      harness/computer....that would probably be best...but I have no
>clue
>>      if/whether this would work.
>>
>>      TTYL!
>>
>>      Larry Kurek
>>
>
>
>
>