7747 tuning again

[rrauscher at nni.com]

You can use a timing light on the injectors with
the engine running. Will show the pattern/flow nicely.

The '747 aldl output is primative. It does not output
the bpw. This is one reason many folk go to the '730,
and port injection.

Around Christmas, I'm going to release a data logger that
will put any aldl interface to shame. It will be for the
C3 ecms.

BobR.

<snip>
>Ok, so now I am back to basics I guess. Check fuel pressure under load first,

>pull injectors and make sure there is no dirt stopping them up although I 

>just rebuilt the TBI, and try new injectors. Other than these steps, I don't

>know what else to do.
>
>I do have another question about my scantool though. I can't get it to show

>injector pulsewidth, and a lot of other things on the 7747 ECM, but on my 

>7730 ECM, it shows much more info. I just attributed this to the 160 baud 

>rate of the 7747. But now I'm wondering if I bought a POS scantool. Its an

>Actron III with a GM cartridge. Anyone know whether these scan tools are any

>good?
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