1991 or 1992 A9L ECU Wiring Schematics
Stephen Stull
Mustang (5 speed) that has a wiring diagram for its ECU in it?
I've got one for my car, just need a schematic to do some comparing to..
we're gonna see if there's a way to pull this off or not at home with the
help from one of my electronics engineering buddies.. (:
Got to check the wiring crossovers first, then I'll get into sensor
tolerances, impedances, etc.. *woohoo* fun. (:
Stephen
1995 SVT Cobra
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Donald R Montgomery
> Does anyone in here have a Helm's manual for a 1991 or 1992 5 liter LX
> Mustang (5 speed) that has a wiring diagram for its ECU in it?
What's your definition of an ECU wiring diagram? I have the full Helms
manual set for my '91 5.0 LX and have never seen a wiring/logic diagram
of what's inside the ECU box...or are you talking about the wiring diagram
-going- to the ECU? If you start poking around inside the ECU trying to
modify engine mapping thru EEPROM reprogramming, you'd better have a spare
ECU in addition to a good idea of what memory location does what.
Interesting experiment - you're driving down the boulevard with your
laptop punching keys, when all of a sudden you have an extra 400 BHP
at the rear wheels and you're burning rubber to the next county. :^)
Don Montgomery
do...@sr.hp.com
Stephen Stull
news:89kchv$aqf$1...@nirvana.sr.hp.com...
> What's your definition of an ECU wiring diagram? I have the full Helms
> manual set for my '91 5.0 LX and have never seen a wiring/logic diagram
> of what's inside the ECU box...or are you talking about the wiring diagram
> -going- to the ECU? If you start poking around inside the ECU trying to
> modify engine mapping thru EEPROM reprogramming, you'd better have a spare
> ECU in addition to a good idea of what memory location does what.
Let me clarify, Don.. until I get a supercharger, this is a far easier way
to bypass the disgustingly misprogrammed computer put in my car. (:
So, without trying to incur too much more confusion, I suppose it would be
the wiring *to* the ECU and *from* the sensors that map to the ECU.. as well
as color codes et al. (of which I can gather other ways, if need be, but I'm
not sure how you'd label them otherwise)
> Interesting experiment - you're driving down the boulevard with your
> laptop punching keys, when all of a sudden you have an extra 400 BHP
> at the rear wheels and you're burning rubber to the next county. :^)
LoL.. (: This would be cool, and.. I do have a laptop.. but.. (:
No, on a more serious note, when a stock '95 Cobra had its ECU replaced with
a '91 or '92 A9L ECU, it dropped 0.4 seconds from its e.t. according to some
testing done by a (now hard to find) web site and apparently one of the
Mustang rags. I am simply trying to squeeze every ounce of performance out
of a stock chip until I have one custom burned based on the truly optimal
settings my car would prefer.
TiggerSVO
was the (internal) programming. I can get you any wiring schematic for any
Mustang from 1983-2000.
Joe
Mike R
Stephen Stull <nospamPOLAR...@forgetthespam4statenaddaspam.com> wrote:
> Does anyone in here have a Helm's manual for a 1991 or 1992 5 liter LX
> Mustang (5 speed) that has a wiring diagram for its ECU in it?
I have a 93 schematic and EVTM manual that may help you out depending on what
exactly your looking for.
Mike
93 Teal Cobra
MJ Miller
system for a '98 GT Convertible.
--
MJ Miller
'98 GT Convertible
Always do sober what you said you'd do drunk. That will teach you to keep
your mouth shut.
--Ernest Hemmingway
"TiggerSVO" <tigg...@aol.comnopqrstu> wrote in message
news:20000302174751...@ng-bk1.aol.com...