[urq] TDC, Cam, and Dist Timing

[Buchholz, Steven]

Timing is determined by the F/TCU using the engine reference and speed
sensors and the various parametric inputs.  The only thing the Hall
sender in the dizzy does is gate off every other reference sensor pulse
so the ECU only sees TDC compression #1.  Since the timing pin is offset
the pulse does not coincide with TDC ... 

Steve B
San Jose, CA (USA)
> 
> I found that my distributor was a little bit off, may have been
> advanced at some point.  Not sure that does anything on these cars
> though like it did on the old 4kq/CGT (JT?) engines.