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<DIV><FONT face=Arial size=2>Drilling bosses and having a 'frankenstein' look on
my hands isn't worth the savings OR performance gains to me (besides not having
the capability to DIY). That superram is pretty cool lookin'... sometimes
buying into some of the popular aftermarket stuff is my reward for skimping on
other things for so long... besides, we gotta support the aftermarket
SOMETIMES... some of them guys are just like US, but all grown up and with
jobs ;-]</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A href="mailto:97005620@lambton.on.ca" title=97005620@lambton.on.ca>Mike
Rolica</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A href="mailto:gmecm@diy-efi.org"
title=gmecm@diy-efi.org>gmecm@diy-efi.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, September 02, 2000 8:47
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: ALDL data</DIV>
<DIV><BR></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=630304003-03092000>your
better off in the bank and performance to build your own
:)</SPAN></FONT></DIV>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV align=left class=OutlookMessageHeader dir=ltr><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> <A
href="mailto:owner-gmecm@diy-efi.org">owner-gmecm@diy-efi.org</A> [<A
href="mailto:owner-gmecm@diy-efi.org">mailto:owner-gmecm@diy-efi.org</A>]<B>On
Behalf Of </B>Dave Zug<BR><B>Sent:</B> Sunday, September 03, 2000 2:14
AM<BR><B>To:</B> <A
href="mailto:gmecm@diy-efi.org">gmecm@diy-efi.org</A><BR><B>Subject:</B> Re:
ALDL data<BR><BR></DIV></FONT>
<DIV><FONT face=Arial size=2>If you have an o-scope and can see a square
wave signal between ground and one of the diag-terminals then you can be
pretty sure that its ALDL. If you can trap the signal and see if it
repeats then you can figger out about how many bytes are there. if its a
really small amount like 8 - 10 then there probably needs to be a request
sent to the ECM for it to start sending lengthy amounts of data, and the
data being sent without this request is very basic.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>With a DMM, if using like a "John Fluke"
73,77,83 series DMM ($100- $150 range) you can see the voltage bar LCD
points pulsing up and down rapidly as the RMS DC value changes (as a result
of the varying duty cycling of the DC signal based on the characters being
represented) in some repeating pattern.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>With an analog needle, you won't see much but a
steady DC voltage somewhere between 0 and 5, needle moving very very
slightly.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I think caddilac had an onboard diagnostic
viewing system built into the RADIO controls system??? Jeffrey M's
wife had a car with that system in it. You might ask him if it was a 95 and
to clarify my vague memory.</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>P.S. .. anyone out there have flow numbers on a
complete stock TPI intake system, and Accel / Ligenfelter units?
;-)</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A href="mailto:jhaines@lingenfelter.com"
title=jhaines@lingenfelter.com>Jason R. Haines</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
href="mailto:gmecm@diy-efi.org" title=gmecm@diy-efi.org>GMECM</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, September 02, 2000
12:22 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> ALDL data</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>What is an easy way to check to see if an
ALDL port has any data coming from it at all (if it is wired correctly
etc.)? I have a custom car I want to read the data from but a Tech 1 and a
Tech 2 won't communicate (neither will Diacom). Anything I can check with
a voltmeter? What about using the Diacom cable (parallel port) and some
kind of software to see the raw data (if any exists)? I think I might also
have a serial port ALDL cable (for some other software) that I could
use.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>BTW - the engine is a Cadillac Northstar
engine with a 1994 ECM (I think it is ECM part number 16197429) and a
custom harness (no Cadillac dash, no electronic throttle
etc.).</FONT></DIV>
<DIV><FONT face=Arial size=2><BR>Jason</FONT></DIV>
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