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

ve table reasonably ok upto around 180kpa and around 5000rpm

I have been playing with AE and so far this is the best it has been I am yet to try this on the road

Here is a log of what happens

m3vxt,

Accel enrichment is definitely the area to work. Stalling can mean there is too much fuel, or more likely it is on too long. Too little fuel usually result in a very noticeable engine cough (a back-fire in the intake). If this was mine, I would try cutting both the duration of the accel pulse ("Accel Time") and cut the 'Acceleration Enrichment' values by 30 to 40%.

If that helps, cut even more. If it doesn't help, let us know.

Lance.

Thanks lance I will give it a go and post up the results..... I think it will be too much fuel as it does pop/backfire some times, but I guess it is too rich as it does black smoke. I have yet to test it under load.

I am only using TPS AE and X-Tau...... should X-Tau be changing at idle??? only a few% either way.

Does the PW need to need to be great or smaller with higher rate TPS..... ie should the slope be upward(/) or downwards(\)?

This what I have so far...... and is the best it has been.
0% - 2.6ms
316% - 5.6ms
860% - 9.9ms
2000% - 17.3ms

m3vxt,

The accel pulse widths need to be higher with increase TPS %/sec, so you have that right.

X-Tau will vary a bit at idle, especially if the idle speed varies a bit.

However, since you have X-Tau enabled, it is adding additional fuel for accel over the TPSdot settings, and subtracting it on decel, and this might be part of your problem. If this was mine, I would either:

- reduce the time factors by half, and the puddling factors by half (more here: http://www.megamanual.com/ms2/xtau.htm and here: http://www.megamanual.com/mt28.htm#u) to let TPSdot accel do more of the enrichment, or

- disable X-Tau altogether for the time being until you get the normal TPS accel enrichment sorted, then you can turn X-Tau back on in small increasing amounts and reduce the TPSdot accel in stages. To turn X-Tau off under 'Fuel Set-Up/General', see: http://www.megamanual.com/mt28.htm#s

X-Tau is the more sophisticated accel enrichment method (and once properly tuned you likely wont need TPSdot accel enrichment at all), but X-Tau is a little more difficult to understand and tune if you aren't used to it.

Lance.