MAF vs. SD

[Ward]

Mike:

Just turn off the VATS is a lot less effort than the hardware>

Or did you mean Vss, (the 200PPM cref).
W.


On Wed, 13 Oct 1999 15:12:09 -0700, Fran and Bud wrote:

> 
> ----------
> >From: Mike Rolica <mrolica at meridian-mag.com>
> >To: "'gmecm at efi332.eng.ohio-state.edu'"
<gmecm at efi332.eng.ohio-state.edu>
> >Subject: RE: MAF vs. SD
> >Date: Wed, Oct 13, 1999, 6:10 AM
> >
> 
> >Yep your configuration, apyu, is vats requires a 2000 pulse per mile vss
> >input (open collector ,ground, open collector , ground..ect)  I know I
just
> >when through this with my 165 and the same broadcast code apyu.  You can
> >make a vats bypass module like I did if you want to go that route, it
costs
> >about 5 bucks to make and work fine.  An optical pickup off of a 85, 86
> >blazer or s10 with cruise works good.
> >If you want I can send you the stuff you need for a vats bypass box part
> >num. wire diag etc.  Involves couple capacitors 555 timer, npn
transistor,
> >and couple of resistors... I used one variable one to fine tune it.
> >Mike Rolica
> >EXT. 260
> > :-)
> >
> >
> >-----Original Message-----
> >From: Bob Valentine [SMTP:bob at tecmark.com]
> >Sent: Tuesday, October 12, 1999 11:53 PM
> >To: gmecm at efi332.eng.ohio-state.edu
> >Subject: MAF vs. SD
> >
> >Thanks for all the replies about what to do for a VSS.... seems I've got
> >plenty of solutions now.   Big question now is still do I keep the '165
and
> >stay MAF, or try and get a '730 and go SD.
> >
> >>From what I've read so far, SD seems to be more tuned to the exact
> >application so it would reason that I'd be better off with MAF since the
VE
> >of my motor is probably nothing like a Chevy motor, much less my
> >displacement is higher and my intake volume/config is nothing like a
TPI.
> >
> >Also, is the current cal I have VATS?   ('89 165, APYU cal)
> >
> >Is there a problem bypassing the heater connections on the IAC body on a
> >TPI throttle body?   This installation's pretty ugly as it is.... if I
can
> >leave that off it would make life easier.   
> >
> >
> >--> Bob Valentine
> >--> bob at tecmark.com





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