Tuning the transient parameters

[hquick]

Today I experimented again. Whilst driving I slowly upped B9000 (impact factor) by 15% increments.
Eventually the Burb got to the point where it would hesitate/bog slightly when hitting the accelerator. It was going too rich.
I did get to a point where I could stab the throttle and there was no sign of lean tip in whatsoever. Infact the commanded AFR is now lagging the tip in...which is ideal (Have a look at the end of the log where I'm stabbing the throttle whilst idling). Only problem now is a full lean condition when I lift off the pedal after accelerating. Is that an issue?

[joecar]

Good job Howard.

...
Only problem now is a full lean condition when I lift off the pedal after accelerating. Is that an issue?

That shouldn't be a problem, it's like DFCO... post some logs.

[hquick]

Here's a few from today....experimenting

[Aloicious]

Here's a few from today....experimenting

Hey Howard, have you had a chance to try anything else out on this? I'm FINALLY done with finals this semester so I should hopefully be able to work on my tune a little more.
here's what I've been running on B9000 for the past few months and it seems to be doing fairly well. not perfect but better than pre-B9000 days.

-40 :0.787111 0.826174 0.863283 0.893557 0.919436 0.943361 0.954592 0.970217 0.969240
-30 :0.736330 0.787111 0.814943 0.855959 0.885256 0.905764 0.926760 0.935061 0.931643
-20 :0.663576 0.728029 0.767091 0.812502 0.842775 0.865725 0.886721 0.892092 0.886721
-10 :0.593751 0.666994 0.714357 0.764162 0.797853 0.829592 0.849611 0.845705 0.839846
0 :0.532228 0.611818 0.662599 0.713869 0.750002 0.788576 0.802248 0.796877 0.791994
10 :0.487794 0.562501 0.613771 0.664552 0.699709 0.736330 0.750002 0.744142 0.739259
20 :0.447755 0.515138 0.563478 0.622560 0.650880 0.681642 0.702638 0.681642 0.679201
30 :0.407716 0.467286 0.508302 0.589357 0.607423 0.631837 0.642091 0.621095 0.617189
40 :0.366212 0.416017 0.447267 0.540040 0.559083 0.576173 0.581056 0.559572 0.556154
50 :0.333009 0.375489 0.407716 0.498536 0.505860 0.519044 0.520509 0.505372 0.500001
60 :0.300294 0.349122 0.356934 0.423341 0.440431 0.467286 0.461915 0.454591 0.447755
70 :0.270508 0.316407 0.334962 0.370118 0.382813 0.411622 0.408204 0.414552 0.412599
80 :0.253907 0.292481 0.307130 0.340821 0.340821 0.367188 0.356446 0.370118 0.372559
90 :0.226563 0.253907 0.266602 0.280762 0.285645 0.321290 0.299805 0.321778 0.327637
100 :0.199219 0.222657 0.218262 0.249512 0.259278 0.256348 0.265137 0.284669 0.290040
110 :0.169434 0.183106 0.198731 0.221680 0.221192 0.229004 0.231446 0.248536 0.254883
120 :0.147950 0.155274 0.163575 0.182129 0.180176 0.196778 0.193848 0.214356 0.223145
130 :0.130860 0.131836 0.132813 0.145508 0.142578 0.154785 0.160645 0.177246 0.185059
140 :0.120117 0.118164 0.114746 0.122071 0.120606 0.130371 0.142090 0.153809 0.160645

[hquick]

Hi 'J'.
I haven't done any 'playing' for a couple of days. I'm driving my little Suzuki Vitara (Geo...to you guys) to save some $$$ in fuel.
I also noticed my trany cooler lines had a hole worn through the outer layer (Aeroquip...blue hose) from the steering shaft. Today I'm going to run the stel lines back in and use compression fittings to make 6" or so flexible sections ust on each end. Then I'll get back into 'playing'.

[Aloicious]

Hi 'J'.
I haven't done any 'playing' for a couple of days. I'm driving my little Suzuki Vitara (Geo...to you guys) to save some $$$ in fuel.
I also noticed my trany cooler lines had a hole worn through the outer layer (Aeroquip...blue hose) from the steering shaft. Today I'm going to run the stel lines back in and use compression fittings to make 6" or so flexible sections ust on each end. Then I'll get back into 'playing'.

heh, sounds like a plan, once I have some time after the holidays I'll see if I can work on the tune a little more too.

[Aloicious]

Well I upped the ~50-140* rows some (anywhere from 5-30% in areas), and smoothed it out quite a bit, and it seems to be doing better. still needs work but definantly going in the right direction. I'd get a screenshot but I don't have the lappy around at the moment. the majority of the lean spikes are taken care of, still have some rich decel issues but I'm thinking of altering the boiling time constant to work on that, I'll have to play around with it some more.

[Whippled 496]

You guys are making me so freaking jealous.........ahhhhhhhh

[Aloicious]

You guys are making me so freaking jealous.........ahhhhhhhh

I could post some screenshots if that would help...mu-ha-ha-ha-ha (evil laugh)

I'll trade you my transient tuning tables for your whipple

[joecar]

Yes, screenshots.