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Message
I'm guessing at a compatibility issue between my fairly
old rev 0.9 EC2 board and the new chip / software. Tracy is going to ship me a
replacement board as soon as he gets back from Sun &
Fun.
John (saving Rusty a lot of
frustration)
Didn't Tracy have your whole EC-2? Seems it would
have had it's incompatibility when he was testing it. Face it, you're
cursed :-)
As for the autotune EM-2 chip, I may not be the best
candidate for testing either. As you recall, I'm using an FJO
wideband O2 meter, and feeding the "legacy 0-1V" output to the EM-2. Tracy
was curious to know what the actual AFR was when the EM-2 just goes off the
bottom of the scale. Saturday, I turned my mixture knob all the
way down, and saw as low as 16.8 AFR, but the EM-2 still showed 3
bars. I'm thinking the FJO is reformatting it's 10-20 range over the 0-1V
scale, rather than duplicating the old O2 effective range of 13-16 (just
guessing at the range). I'll have to ask FJO about
this. If that is how it's working, it may or may not cause a problem
with Tracy's autotune feature. I'll ask him when I find out how the output
works from FJO.
Rusty
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