[Diy_efi] 2.0 diss module with the 1227749

[William Shurvinton]

Cool,

I need to work on that testbench. The pulse generator going spare at work
was unfortunately designed for testing MECL10K so goes a tad too fast for my
needs so it's 555 time. I've dropped the ball a tad as I was looking
throught the BLM code and having nefarious thoughts about WB and autotuning.
BB and JC both have some autotuning code for the PC and it wouldn't be toooo
difficult to do an ALDL mode to write to the BLM cells....But that can wait.

OK need to play with this one a bit more

Bill
----- Original Message -----
From: Shannen Durphey <shannen at grolen.com>
> A custom dis installation might be able to overcome this issues without
> ever approaching the code.  The easiest approach might be to install a
> distributor base to generate REF pulses outside the dis module.  Yes, the
> module operates in OEM state with a 60 deg window between the point when
> REF is generated and the next cps notch passes the sensor.  If you set
your
> maximum advance to 60deg BTDC and minimum advance to zero deg. you should
> never see spark outside this window.  I'd expect it would be almost a
> non-issue to ground the dis generated ref signal through a resistor and
use
> the dizzy based module to provide signals at the correct time to the ecm.
> Bypass and est would work the same way as they usually do.
>
> This would also work if a distributor cannot be physically installed.  A
> crank sensor and wheel can be fabricated to generate 2 pulses per
> revolution, each at TDC for the 1+4 and 2+3 cylinder pairs.  A traditional
> HEI module can be installed and connected to the ecm REF line.  The CPS
can
> be close to TDC without being correct, as the offset can be measured and
> accounted for by adjusting "ref angle" within the calibration.
>
fi


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