MicroSquirt.com read only forum (Jan.15,2018)

> I live at 1550m (4720ft) and tuned my MS at this altitude. Took a trip to
> the coast this weekend and noticed how the mixitures became leaner as we
> dropped to lower altitudes.

Interesting. You're going to laugh at the altitudes here, but here goes. I
live at about 600 ft. above sea level. I ...

> What is the effect of ignition timing on AFR? In other words, to what
> extent is the AFR that I get at any given point affected by ignition
> timing?

Very little in the instances you refer to. The same amount of air and fuel
enter the cylinder and produce roughly the same exhaust gases. The ...

> Seems like some posts got removed from this topic. Where did they go?

Was just scratching my head trying to work out where I'd posted. Could
have sworn it was on this thread ;-)

Kevin

Posted by email.

I'd like to add my vote for 2 coil drivers. My car is a Lotus 7 style sports car and microsquirt would be great in that application for 2 reasons:

Size: Things are not as tight as a motorcycle but the full size MS does take up quite a bit of under-dash space.

Ruggedness: It's not easy to make a ...

> I post the my results back and the we can figure out why the instructions
> say invert and yours only works without. Weird eh?

I think some early EDIS instructions were advising a different way of
wiring the opto isolator such that the trigger to the CPU happens on the
opposite edge of the PIP ...

> You indicate that the old MS/MSSnS does not exhibit this, but you see this
> on MS-II. I have noticed that I also had to increase the threshold on MS-II
> compared to original MS. I attribute this to the inrease in resolution of
> MS-II's ADC and the fact that the ADC acquisition simply runs ...