[Gmecm] Back to square one

[davesnothereman at netscape.net]

-----Original Message-----
From: Robin Handley <Robin at FuryWorld.fsnet.co.uk>
To: gmecm at diy-efi.org
Sent: Sun, 14 May 2006 06:44:57 +0100
Subject: Re: [Gmecm] Back to square one


"My GMECM was running the ignition on a Ford (Kent) Crossflow (highly 
tweaked
1600cc) but I replaced with with a Vauxhall 2.0XE (cylinder head design 
by
Cosworth)."

I was actually hoping you would tell me it's the 2.0 Vauxhall.  Are you 
aware that the engine you're using is a close cousin to the 2.0L engine 
used in the Pontiac Sunbird?  The Sunbird engine used with the 7749 is 
a C20LET, an 8V version with forged pistons and very poor port flow.  
Are you using a distributor in the Coscast head?  If your block and 
crank have provisions for the Bosch DIS system it's possible to switch 
to a Delco DIS module and use the 7749 or the 7730 / 7727 after some 
minor machine work.  While you're looking to switch engine management 
systems, I've been looking at 16V heads and Euro engines.


"> The promid will usually work, but I can compare the checksum to the
> values in the calibration and sometimes come up with a proper ID.
> Promid 3411 is AUWR3607, 1987 Sunbird GT 2.0 Turbo, manual trans.

The checksum is $D1EE in all the versions that I have. That would be 
great.
Thanks. :-) "

:)  I also need the calibration to compare the checksum against.  But 
it's not necessary, the scan id was enough.  As I said, promid 3411 
(hex value  $0D53) is for AUWR3607.  You probably have the same 
calibration under different names.


"Thanks for all your continued help. :-)"

Robin

No problem.

Zaphod

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