Help with VE tables. Only been tuning for a week or so..

[fasteddi]

Ok Ive got a 1991 3.1L V6 Camaro Auto(730 ECU) that i recently put a larger cam 260 delta re-grind, ported the heads heavly and also all the intakes/TB.
Ive been data logging and re-burned 2 chips so far but could use a little help if possible on getting these VE tables set up first. Seems like I fix one area only to mess up another. The BLM #'s were absolutly horrible when i first started datalogging since the cam messed with the vaccume (MAP) Ive mad a little progress here and there, but well its flustrating.

I attatched a recent data log, it wasent for very long but ive been dealing with a IAC error that i finally got rid of. Any help or advice is great!!

[EagleMark]

I'm really happy we got a good adx for you! Thanks for working with me so I can learn to get it right! I changed a few things, so download $88-V.21 below. It now has Engine data list view so you can see all engine data same time. Separate Error codes and the old default view. You can adjust these to how you want. It's a great feature of TP. The monitor is also set with things I like to watch...

Your also still showing only like 173 degrees totally warmed up? Should be a little higher if you have a 180 thermostat. Would be about right if you have a 160, but that means other changes in bin to start so engine knows it's at full temp at lower setting. I don't know your bin or what to look for there?

Your not going to get good BLM readings to adjust VE tables because you keep dropping out of closed loop for no reason? You may have a bad O2 sensor or loose wire? Play back the log you posted and open list view for Engine Data, open Monitor, play log. Click back and forth from Monitor to List view at these times and you will see. Look at time frame at 06, 106, 138, 319, 446 and several others and you are going open loop. When you go open loop your BLM is OFF/Not Correct. So you are not getting a good average to adjust with.

HTH!

[EagleMark]

I also fixed the website so you can upload xdl TunerPro Data Log files now without being zipped, I thought it was done... till I tried to give MudBuggy one...

[dave w]

I've looked at the data log posted.

What a can of worms!

I looked at the Overall closed loop BLM average; 121 = rich
I looked at the Overall closed loop Integrator average; 124 = rich

Normally I would lower the BPW / Raise Injector Flow, but the idle BLM is about 148 = lean. So lowering the BPW / Raising Injector Flow would make the idle BLM EXTREMELY LEAN!

I would raise only the VE number on VE Cells 800 RPM / 45 , 50, 55 Kpa by 16%. (148/128=1.16)

For example if VE Cell 800 RPM / 45 Kpa is currently 53.46. I would multiply 53.46x1.16=62.01 and change VE Cell 800 RPM / 45 Kpa to 62.01
For example if VE Cell 800 RPM / 50 Kpa is currently 57.57. I would multiply 57.57x1.16=66.78 and change VE Cell 800 PPM / 50 Kpa to 66.78

I'd log again, and verify the BLM averages for the idle VE Cells that were corrected changed from about 148 BLM average to about 128 BLM average.

VE tuning is really an exersize in Math!

dave w

[fasteddi]

Ok im going to first try to find and change the values for the fully warmed up temp in the bin, then check the o2 sensor and make sure its ok also i have a new spare one to throw in there in case, then hopefully that all works out then run another log and if its the same values as the first one ill change the values that were stated in the post above me.

Thanks, you think this data logg was a can of beans you should have seen the first few!

After i get a datalog the way i like it with the car up to temp easier and closed loops staying intact ill upload the datalog so i can get further input. Thanks everyone as this is really new to me!

[fasteddi]

Heres the latest log. The attatchmen manager said i exceeded the files size so i put it in a zip folder.....I seeemd to get the BLM ave. a little better, i changed the temp threshholds on the bin to a lower one but couldnt figure out the open/closed loop twitch problem. Any ideas? I tryied a brand bew 02 sensor i had and still went to open loop every now and again while logging. I need to work on the idle tables still

[EagleMark]

I've looked at the data log posted.

What a can of worms!

VE tuning is really an exersize in Math!

dave w

He's getting closer but I think the open loop numbers are messing up his overall BLM numbers he is adjusting with? Running minimum and running maximum are so far apart? Yet history average is getting closer each time... I'm really not sure...

[fasteddi]

Yea I disabled the AIR system threshhold temp the 151c since i do not have it anymore. I dont have headers, it was a littler rainy out earlier, you think that water can splash up and hi the sensor and pipe, cooling it down for a split second?? Theres no heater on the 02 sensor, just one wire. I know i need to get a wideband asap for the WOT tuning. The adx file connects every time with no problem at all. Im going to change a few cells and log one more time today then i gotta go to work. ill post the file in its full xdl format. Thanks again!