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Old 12-02-2008, 11:50 AM   #9 (permalink)
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Join Date: Jun 2008
Location: Orlando, FL
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to jthg:
I'd love to do the megasquirt setup, but I just don't have the resources right now (ie time and money).

to dcb:
I bought the EFIE manual a while back and built the circuit. I don't think I ever got it to work, but I'm pretty sure that all it does is add an offset to the voltage generated by the O2 sensor. This would mean that the computer would never see a lean value and would most likely go into open loop to eliminate the faulty O2 signal it's seeing. Using a microcontroller, low and high values can be generated based on the output of the sensor and their duration can also be controlled.

I'm fully aware of the consequences of running lean, and will be taking some extra precautions to prevent adverse effects. At least this is what I'm hoping to do.

In the meantime, I'm trying to get as much data about the Saturn PCM as I can. I have an extra OBDII PCM now and I'd like to find the map tables and eventually change some values.
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