DIY_EFI Digest V1 #181

[talltom]

Alright! Now I can get into this! For starters most of these models were tbi. So is it
easy to change to tpi? How? Why 2.0 to 5.7? Why not tubocharged 8.2? Parameters are 
parameters, if air valves, injectors, map, etc are sized correctly what difference does
size make? While we're at it, any suggestions as to how to get around the pulsations
inherent in kinky cams? Also need to know the ug level of getting one of these to work
as a map type system, as I think maf's are a pain in the butt.(to much plumbing, cost,
unreliable, space, not to mention the interface, mapping, sizing etc probs.)
  Knock sensors in the head? I thought they went by the crank to be closer to where
the harmonic is transmitted from the cyl? How do you intend to keep valve noise from
making your tune crazy with knock sensor in head? 
 
> From: pfenske at direct.ca (peter paul fenske)
> Date: Wed, 26 Jun 1996 08:52:02 -0700
> Subject: AC Delco ECM
> 
> Hello Gang
> Just some more info on GM ECM.
> FYI the more desirable ECMs are those used in port operation
> from about 1986 to 1992. The last #s are 165 and 730 on the
> PN. These two ECMs can use a 16K and a 32K respectably.
> On the weekend picked up two 165s, one complete tpi harness, and
> a firebird aircleaner assembly for 50$ can. 730s a bit harder to
> find though.
> There are usually several K of unused prom space, as well as several
> unused inputs and outputs. GM sensors and actuators are just as cheap.
> About the only hindrance so far is untangling the IO.
> 
> So if anybody has any info or clues please let me know
> 
> If someone would like to run a BMW or whatever with one of these let
> me know. There are virually hundreds of calibrations for these ECMs.
> Anything from 5.7L to 2.0L.
> 
> What I have managed to untangle so far are Spark Control, Idle control,
> Fan control, Speed limiter function. Untested as yet are checksum control
> and some fueling. If anyone has info to correlate please let me know.
> 
> With the price and availability these ECMS would be the answer for
> many EFIers. Also the electronics is far superior to what can be
> made and believe me I have access to good PCB manufacturing.
> 
> WEll GL all: peter      pfenske at direct.ca
>