[Diy_efi] GM EFI ECU Question....

[Scott Appe]

I am interested in the names of those who can reprogram MEFI3 & MEFI4 ecms.
I have a 383 small block with aluminum fast burn heads, LT4 hotcam, and
Ramjet intake & throttle body.  I am using the stock 350 Ramjet MEFI4 ecm
with O2 sensor, but it is a little lean on the top end.  I also don't like
the desired idle RPM and rev limiter setting.

Scott

----- Original Message ----- 
From: "Tim Eichhorn" <tim.eichhorn at cox.net>
To: "'A list for Do-It-Yourself EFI'" <diy_efi at diy-efi.org>
Sent: Wednesday, October 13, 2004 8:52 PM
Subject: RE: [Diy_efi] GM EFI ECU Question....


Tim,

The answer is "not easily".  That ECU (its either MEFI3 or MEFI4) has not
been widely available or very popular and therefore has not been "cracked"
by tunercat or others. It would not be economical for them to do so either;
there are just not that many cars w/ this ECU on them (other than those with
the Ramjet 350 installed). There are people who can reprogram it. I'll give
you some names if you need. It was developed originally for marine
applications. The only software that I know of is called "Ingenious Pro" and
cost some serious cash (~$2K).

V/r

Tim

-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org] On
Behalf Of Van Setten, Tim @ ACSSD
Sent: Tuesday, October 12, 2004 12:00 PM
To: 'DIY-EFI (1)'
Subject: [Diy_efi] GM EFI ECU Question....

> My neighbor just bought a GM crate "Rocket 350" setup, motor, EFI
> computer, wiring harness, and all for about $4900.00 (I believe).  This is
> supposed to be a 350 CI, 350 horsepower engine.  Distributor, Bank-To-Bank
> fire, with all the sensors, etc..  The computer is mounted next to the
> ignition coil.  My question is:  Can this be reprogrammed or tweaked?
> Anyone know?.......Tim.
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