ecm test bench

[Bruce Plecan]

Might try this

    http://diy-efi.org/gmecm/projects/ecm_testbench/

From: "Daniel Collins" <bossute at one.net.au>
 Anyone willing to share some doe's and don'ts of building a ecm test bench.
> Was intending to make it multi purpose so that I can clean and test my
> injectors.
> I have been putting it of for ages but have recently changed the injectors
> in my 400 ponty for some larger Ford motorsport injectors  - in
preparation
> for a increase in stoke - and now at certain rpm points at WOT I have a
> misfire. I originally thought it was my prom calibration out but last week
> we put the injectors into a friends car and changed the injector scaling
to
> suit and the problem was evident on this car also ( the programming was
very
> close as we were doing WOT runs on the dyno and fuel and A/F ratio were
> constant throughout the runs as was the power / torque curve ( 415 hp @
> wheels) .
> I think the injectors are sequential and at 4500rpm some harmonic effect
is
> happening due to them being pulsed at a much higher rate - sort of like
> valve bounce in the valve train.

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