730 vs. 747

[Bruce]

Why reinvent the wheel?.
Use a 730 (for a 4 cylinder you could even use it in a single injector TBI
mode).   If it were me I'd go with the 730, and the 8D mask.  Also, the 747
was never used in a 4cyl application.
Bruce

From: "Ron Schroeder" <rjs at bnl.gov>
Subject: 730 vs. 747
> I am working on my first GM ECM efi project.  I am trying to fuel inject
an
> inline 4 cyl engine that was never available in fuel injection.  So far I
> have installed and checked out the heated O2 sensor, engine temp., crank,
> VSS and MAP sensors.  The intake manifold, throttle body, 18LB injectors,
> idle valve and TPS are almost done.
> I want to use PFI not TBI.  I am trying to decide on the ECM to use.  I
> have mostly narrowed it down to either the '747 or the '730.
> I don't think that the '747 was ever used by GM for PFI but I think that
it
> is possable with external drivers.  Has this ever been done?
> My other choice is the '730.  Since this one has been used in both TBI and
> PFI applications I would not need to make an external driver.
> Which would be a better choice for a daily driver, especially programming
> wise since I am sure that the maps would not very close to any factory
ones.
> Ron Schroeder

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