Custom OS#5

The B3632 table decays pretty quick, unless you completly change the decay rates etc. this will not help you much. How about the A0008 ECT Commanded Fuel multiplier?

yeah just ground the pin, its the same one used for valet mode, selectable in the tune.
I use the valet now and again.
Your ect spark tables might be pulling timing till warm too. Some of us have zero'd out most colder temps due to lack of power at colder ect's. Just remember to not use all the power till warm.

I just upgraded to OS #5, but i'm having issues with the Commanded Air Fuel Ratios. Upon startup the Commanded AFR is about 12.08, works its way up over the next few seconds, and then gets stuck at 12.53 and never goes any higher. The commanded Air Fuel table is set to 14.63 at the proper cells that are being referenced.

Any ideas?

Have you read the auto tuning tutorial? Have you tuned your ve 100% with a wideband? Its only accurate AFTER you have tuned it in with the auto ve tutorial.

Give us the background and details.

Car has been tuned with the AutoVE for 2 months now. Everything pretty much dead on with the wideband. The problems isn't with my reported AF readings, it is with the Commanded AFR.

Been using the BEN Factor map to tune with, Commanded Air Fuel Ratio under idle and cruising conditions has been showing as 14.63 in the scanner while logging, and 12.95 is where i've been at WOT. (It is setup just as the Auto tutorial docs show)

Now i'm ready to do just a little more tweaking to the VE table and turn the LTrims back on for daily driving, but I'm also a nitrous junky, so I decided to throw in OS v5 for the N2O activated timing table.

I've been running a 2001 12202088 operating system and calibrations, this morning I did a full flash with OS v5 02020005 calibration and used a 2002 12212156 tune file to update the calibrations with. Then I hand updated all the tables to reflect my previous tune settings.

The car appears to be running fine, it is just that while logging the car, it is reporting the Commanded Air Fuel ratio as 12.53 ALL the time, idle, cruising, WOT (all the time except for the initial couple of seconds after startup) So my BEN factors are way out of wack... and i'm sure that if I turned the Strims or Ltrims on at this time, it would try to richen it up all the way down to 12.5

You can send the file to me if you want and I'll take a look. Email andrew at holdencray dot com

emailed it to you.

For anyone else that might want to take a gander and offer a new perspective.

http://www.cepheid.org/~kris/EFILive/OSV5_0001.tun

Looking at your tune I would expect your Commanded AFR to be around 12.5 until your ECT reaches 40*C (104*F). Then it will command 14.63:1 from there up, till you hit 85kPa and above, where it enriches to 12.95:1.

You should look at your PE thought, cause it is still enabled and you are commanding 14.63:1 in PE mode :eek:

Your desired airflow table also looks way too high...

Desired Airflow needs to be that high to keep this motor idling properly.

Car's setup is a 408, AFR 225s, 248/254 .622/.612 114+2, 11.3:1 compression, FAST 90/Nick Williams 90mm, SVO 30lb injectors, MAFless.

Setting the PE vs RPM table to 14.63 is what the AutoVE tuning tutorial says to set it to.

Here is a tune from some tuning last night when the car was still runing the stock operating system:

http://www.cepheid.org/~kris/EFILive/Log_0029.efi


And here is one from just now from a cold startup (at frame 3700 or so I turned the A/C on to raise the operating temp up some more)

http://www.cepheid.org/~kris/EFILive/Log_0030.efi