Matthew Kennedy

Those are all old firmware - log again with new snapshot on the genesis and see if behavior changed. 964 shows the crank losing sync 985 shows good vvt position,...

> https://rusefi.com/online/view.php?log=1035 Exhaust vvt on newest firmware What happens when not cranking? We don't use that cam for any engine sync purpose, just vvt measurement.

OK, I now understand what's going on with exhaust vvt. Will create a new issue. #4546

@ElDominio do a bunch of cranks back to back again on genesis, see how it looks now

Looks like events scheduled on even number teeth are wrong by 30 degrees (one tooth!) 

~~Ah hah! This will be fixed by #4513.~~ Nope, doesn't fix it.

breakpoint set at tooth #20, where we expect cylinder 2's dwell to be scheduled why is the next tooth in the wrong spot? 

simplest repro so far: single cylinder, two stroke, 10 degrees timing, 12-1 trigger, 1200 rpm dwellStartAngle = 321.2 deg sparkAngle = 350 deg sniffer shows 

It seems like in "use only rise = false" mode, we're off by 1/2 tooth (one edge)

now I've tried to reproduce it on another pc..... and it looks different (and correct!?)!