Decided to ditch using a VR sensor for the crank wheel, and bought a new hall effect sensor that DIYAutoTune came out with.
It's a really nice sensor, no VR conditioner to deal with, just a nice clean square wave signal... And I didn't have to change any wiring really, just pulled the lead from the OEM CAS connector and changed a few MegaSquirt settings.
However, even with the nice clean signal the hall puts out, I still had to run the sensor through an amp, apparently it doesn't sink enough current to drive the 2.2 pcb 'squirt.
http://www.youtube.com/watch?v=leJmlag2Ciw
Rock solid timing, no real timing drift to speak of, but I was having a little issue with it getting RPM spikes above 4000 RPM...
Seems my alternator was causing a lot of noise, which I should have thought of... That's what I get for powering the sensor with 12volt I guess.
It's running real smooth now, I do need a new alternator though, this one is on it's last legs... Slow to recover, putting out a little too much voltage, current seems weak. It's still working, keeping the battery charged, but it's gotta go.
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