Tuning AVCS without a dyno (AVCS for Gruppe-S header post 12 and 24)

[Hyperblue302]

Fwiw, I ran the avcs tool about 2 years ago. With well over 100 runs run thru the tool, these are the values I ended up with.

Edit: Only mods were panel filter and EL header

[Tor]

Originally Posted by Hyperblue302

Fwiw, I ran the avcs tool about 2 years ago. With well over 100 runs run thru the tool, these are the values I ended up with.

Edit: Only mods were panel filter and EL header

Cool! What was your method? Did you change one cam at a time? And how many flashes did it take.

[solidONE]

Same cam timing with about 15 to 20*f ambient temperature differential. Oddly the logs take in higher ambient temps (66*f) also read higher average VE than in lower ambient temps (45*f ish).

apparently you can smooth the lines further by clicking on the "go" button more times. did not know that.

Red trace 66*f Blue trace 45*f ish



Edit: Would this be a good way to approach? Take logs using various cam maps varying about 5* increments then load them all to the app and see what it spits out?

[solidONE]

After establishing what I thought a decent improvement in the intake cam setting I tried 3 different exhaust cam settings. Logs taken within an hour of eachother under very similar conditions 3 degree differential in ambient temps. Plugged it in the app and see what it spat out.



The result looks a bit odd at the 4200rpm marker. Maybe I shoudl take more logs with all 3 different exhaust cam settings.

[Kodename47]

@solidONE extract those 3 pulls from the log (you can use the WOT tab and then feed it back in) and that will probably clean up the results. The tool doesn't seem to take into account whether you tick/untick. I would say looking at the VE the curve you want is quite clear, red to ~3700, then the green for the rest. Remember that the Ex AVCS is going to net you less gain than the intake so don't expect massive swings in VE from the changes.

[solidONE]

Originally Posted by Kodename47

@solidONE extract those 3 pulls from the log (you can use the WOT tab and then feed it back in) and that will probably clean up the results. The tool doesn't seem to take into account whether you tick/untick. I would say looking at the VE the curve you want is quite clear, red to ~3700, then the green for the rest. Remember that the Ex AVCS is going to net you less gain than the intake so don't expect massive swings in VE from the changes.

Yup! I'll just run the setting that gives the richest mixture or allow the most advanced ignition without knocking. Can barely tell the difference between the different settings. Maybe I should try the different settings using E85 and see if it makes a larger difference. But let me try plugging in select pulls form each log as you suggested.

[Kodename47]

Originally Posted by solidONE

Yup! I'll just run the setting that gives the richest mixture or allow the most advanced ignition without knocking.

How do you mean the one that gives the richest mixture. The AVCS shouldn't change the AFR that much, unless you have crazy overlap of course. That 2nd chart pretty much verifies the 1st one. Can you not delete the unwanted pull columns in the input screen? You can do similar for the OL MAF tab etc. Would save you taking the data out in a different tab.

[solidONE]

Originally Posted by Kodename47

How do you mean the one that gives the richest mixture. The AVCS shouldn't change the AFR that much, unless you have crazy overlap of course. That 2nd chart pretty much verifies the 1st one. Can you not delete the unwanted pull columns in the input screen? You can do similar for the OL MAF tab etc. Would save you taking the data out in a different tab.

"Cam 1" with less exhaust retard trends very slightly leaner than "Cam2" with abou 5-7* more exhaust retard. Not sure if it's a direct result of difference in cam timing or other factor. There is about 5*f difference between ambient temps between the logs. I'll still need to figure out if this will allow me to increase ignition timing. That's what I mean. Though I'm not sure if it will make a difference in knock/iginition advance threshhold. I aim to find out. Though, it seems with my current ignition map using this winter blend fuel it has already crossed slightly over that threshhold.

Cam 1: https://datazap.me/u/solidone/cam2-7...3252-3263-3272

Cam 2: https://datazap.me/u/solidone/z7-di5...2578-2588-2599

[freerunner]

It's a good sign if AFR gets leaner with <I>less</I> overlap. IF LTFT didn't change due to atmospheric conditions. Pressure wave exploited.

[solidONE]

Originally Posted by freerunner

It's a good sign if AFR gets leaner with <I>less</I> overlap. IF LTFT didn't change due to atmospheric conditions. Pressure wave exploited.

I'm pretty sure the LTFT is 0 since these pulls were logged right after flashing, but I only have 14 channels to log LTFT wasn't one of the 14 I logged. I really should buy a tactrix to log with.

[JIM THEO]

I bring back this old thread just to ask you, what base intake/exhaust AVCS tables you are using with the Gruppe-s adapted AVCS normal/safe maps?

[tomm.brz]

you don t need to change or tune BASE avcs, they aren t used. they are used only in limp mode or with am of 0.1, and if get those base tables used, you have bigger problems to think of

[craneom]

Originally Posted by Tor

I already did the Gruppe-S header.



There is no difference betweem 91 and E85 in with regards to valve timing. It's flow specific.

Below in copy paste friendly format (maybe I did some tweaks since the picture above, can't remember anymore).

I would much appreciate feedback either as a comment here in this thread or per PM.

Intake:

[Table3D]
0.15000000596046448	0.20000000298023224	0.30000001192092896	0.4000000059604645	0.5	0.6000000238418579	0.699999988079071	0.800000011920929	0.8500000238418579	0.8999999761581421	0.949999988079071	1.0	1.100000023841858	1.2000000476837158	1.2999999523162842	1.399999976158142
800.0	0.0	0.0	0.0	0.0	0.0	0.0	10.0	20.0	20.0	20.0	20.0	20.0	20.0	20.0	20.0	20.0
1000.0	0.0	-5.0	-5.0	-5.0	-5.0	0.0	10.0	20.0	20.0	20.0	20.0	20.0	20.0	20.0	20.0	20.0
1200.0	0.0	-10.0	-10.0	-10.0	-10.0	-10.0	10.0	20.0	20.0	20.0	20.0	20.0	20.0	20.0	20.0	20.0
1600.0	0.0	-10.0	0.0	0.0	0.0	0.0	10.0	20.0	25.0	25.0	25.0	25.0	25.0	25.0	25.0	25.0
2000.0	0.0	0.0	0.0	0.0	0.0	0.0	10.0	20.0	30.0	30.0	30.0	30.0	30.0	30.0	30.0	30.0
2200.0	5.0	5.0	15.0	5.0	5.0	5.0	10.0	20.0	33.0	33.0	33.0	33.0	33.0	33.0	33.0	33.0
2400.0	10.0	10.0	20.0	10.0	10.0	10.0	10.0	20.0	33.0	35.0	35.0	35.0	35.0	35.0	35.0	35.0
2800.0	10.0	10.0	15.0	10.0	10.0	10.0	10.0	20.0	33.0	37.0	37.0	37.0	37.0	37.0	37.0	37.0
3200.0	10.0	10.0	10.0	10.0	10.0	10.0	10.0	25.0	33.0	39.0	39.0	39.0	39.0	39.0	39.0	39.0
3600.0	10.0	10.0	10.0	20.0	20.0	20.0	20.0	25.0	33.0	39.0	39.0	39.0	39.0	39.0	39.0	39.0
3800.0	10.0	10.0	10.0	20.0	20.0	20.0	20.0	25.0	33.0	39.0	39.0	39.0	39.0	39.0	39.0	39.0
4000.0	10.0	10.0	10.0	20.0	20.0	20.0	20.0	25.0	33.0	39.0	39.0	39.0	39.0	39.0	39.0	39.0
4200.0	10.0	10.0	10.0	20.0	20.0	20.0	20.0	25.0	33.0	39.0	39.0	39.0	39.0	39.0	39.0	39.0
4400.0	10.0	10.0	10.0	20.0	20.0	20.0	20.0	25.0	33.0	39.0	39.0	39.0	39.0	39.0	39.0	39.0
4600.0	10.0	10.0	10.0	15.0	15.0	20.0	20.0	25.0	33.0	39.0	39.0	39.0	39.0	39.0	39.0	39.0
4800.0	10.0	10.0	10.0	10.0	10.0	20.0	20.0	25.0	33.0	39.0	39.0	39.0	39.0	39.0	39.0	39.0
5200.0	10.0	10.0	10.0	10.0	10.0	20.0	20.0	25.0	33.0	38.0	38.0	38.0	38.0	38.0	38.0	38.0
5600.0	10.0	10.0	10.0	10.0	10.0	20.0	20.0	25.0	33.0	37.0	37.0	37.0	37.0	37.0	37.0	37.0
6000.0	10.0	10.0	10.0	10.0	10.0	20.0	20.0	23.0	30.0	34.0	34.0	34.0	34.0	34.0	34.0	34.0
6400.0	10.0	10.0	10.0	10.0	10.0	20.0	20.0	20.0	29.0	29.0	29.0	29.0	29.0	29.0	29.0	29.0
6800.0	10.0	10.0	10.0	10.0	10.0	20.0	20.0	20.0	23.0	23.0	23.0	23.0	23.0	23.0	23.0	23.0
7000.0	10.0	10.0	10.0	10.0	10.0	18.0	18.0	18.0	18.0	18.0	18.0	18.0	18.0	18.0	18.0	18.0
7200.0	10.0	10.0	10.0	10.0	10.0	14.0	14.0	14.0	14.0	14.0	14.0	14.0	14.0	14.0	14.0	14.0
7400.0	10.0	10.0	10.0	10.0	10.0	10.0	10.0	10.0	10.0	6.0	6.0	6.0	6.0	6.0	6.0	6.0

Exhaust:

[Table3D]
0.15000000596046448	0.20000000298023224	0.30000001192092896	0.4000000059604645	0.5	0.6000000238418579	0.699999988079071	0.800000011920929	0.8500000238418579	0.8999999761581421	0.949999988079071	1.0	1.100000023841858	1.2000000476837158	1.2999999523162842	1.399999976158142
800.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0
1000.0	0.0	0.0	0.0	10.000610376140001	10.000610376140001	10.000610376140001	10.000610376140001	10.000610376140001	10.000610376140001	10.000610376140001	10.000610376140001	10.000610376140001	10.000610376140001	10.000610376140001	10.000610376140001	10.000610376140001
1200.0	0.0	0.0	10.000610376140001	19.99969487337	19.99969487337	19.99969487337	19.99969487337	19.99969487337	19.99969487337	19.99969487337	19.99969487337	19.99969487337	19.99969487337	19.99969487337	19.99969487337	19.99969487337
1600.0	10.000610376140001	19.99969487337	19.99969487337	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003
2000.0	10.000610376140001	19.99969487337	30.000305249510003	39.99938974674	39.99938974674	39.99938974674	35.00061043758	35.00061043758	35.00061043758	35.00061043758	35.00061043758	35.00061043758	35.00061043758	35.00061043758	35.00061043758	35.00061043758
2200.0	10.000610376140001	19.99969487337	30.000305249510003	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674
2400.0	10.000610376140001	19.99969487337	30.000305249510003	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674
2800.0	19.99969487337	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674
3200.0	19.99969487337	30.000305249510003	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	35.00061043758	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674
3600.0	19.99969487337	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674
3800.0	19.99969487337	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674
4000.0	19.99969487337	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674
4200.0	19.99969487337	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674	39.99938974674
4400.0	19.99969487337	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	35.00061043758	37.50000009216	37.50000009216	37.50000009216	37.50000009216	37.50000009216	37.50000009216	37.50000009216	37.50000009216
4600.0	19.99969487337	30.000305249510003	35.00061043758	35.00061043758	35.00061043758	30.000305249510003	30.000305249510003	35.00061043758	35.00061043758	35.00061043758	35.00061043758	35.00061043758	35.00061043758	35.00061043758	35.00061043758	35.00061043758
4800.0	19.99969487337	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	30.000305249510003	30.000305249510003	32.00073250052	32.49969490409	32.49969490409	32.49969490409	32.49969490409	32.49969490409	32.49969490409	32.49969490409	32.49969490409
5200.0	19.99969487337	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003	30.000305249510003
5600.0	19.99969487337	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	30.000305249510003	30.000305249510003	30.000305249510003	27.49938971602	27.49938971602	27.49938971602	27.49938971602	27.49938971602	27.49938971602	27.49938971602	27.49938971602
6000.0	19.99969487337	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	30.000305249510003	30.000305249510003	30.000305249510003	27.49938971602	27.49938971602	27.49938971602	27.49938971602	27.49938971602	27.49938971602	27.49938971602	27.49938971602
6400.0	19.99969487337	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	30.000305249510003	30.000305249510003	30.000305249510003	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144
6800.0	19.99969487337	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	30.000305249510003	30.000305249510003	30.000305249510003	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144
7000.0	19.99969487337	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	30.000305249510003	30.000305249510003	30.000305249510003	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144
7200.0	19.99969487337	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	28.99932868455	28.99932868455	28.99932868455	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144
7400.0	19.99969487337	30.000305249510003	35.00061043758	39.99938974674	39.99938974674	28.99932868455	28.99932868455	28.99932868455	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144	25.00000006144

Tor, are you still running these tables? What other adjustments have you made? I am using these exact tables coupled with some MAF scaling adjustments and my Gruppe-S header. Below 3k under too much throttle or load it will buck and stumble. It pulls -0.65 FLKC under WOT between 3800 and 4000 rpm and almost seems like it breaks up above 7k. Not sure if it's my MAF scale or what... '13 BRZ.

[JIM THEO]

Originally Posted by craneom

Tor, are you still running these tables? What other adjustments have you made? I am using these exact tables coupled with some MAF scaling adjustments and my Gruppe-S header. Below 3k under too much throttle or load it will buck and stumble. It pulls -0.65 FLKC under WOT between 3800 and 4000 rpm and almost seems like it breaks up above 7k. Not sure if it's my MAF scale or what... '13 BRZ.

Mine with the above AVCS maps did the same before perfect MAF scaling mainly in ELC maps, also between 5600-6400 loose control of left-right intake AVCS, they have some remarkable difference, I don't know why.
-0.65 FLKC under WOT between 3800-4000rpms especially with 4th-5th-6th gears is minimal in my humble opinion, I am not expert though!