411 computer semi-opened loop

[LS1_Dragster]

I just replaced the computer in my 97 Yukon with a 411, I updated the OS to 02020003.

I've tried everything to get it to work semi-open loop:

1) B3647 set for 14.63 at idle and cruising
2) B4205 all set to 255
3) B3801 set to disable
4) B3601 all set to 14.63

I did this with my 71 firebird, different computer and OS 01270003 and it works great.

What am I doing wrong?

Lee

[LS1_Dragster]

Anyone? Even if your just guessing I would appreciate some help!!

Lee

[LS1_Dragster]

Somebody at EFILive tech support should have an answere to this problem....They wrote the program so there has to be a brainiac there, someone go wake him/her up!!!!

Lee

[mr.prick]

What is the problem?
Fuel trims are off (0%) and you are commanding 14.63 AFR in OL.
Is this not "semi-open loop"?
If everything is "working" with another tune you have, create a script from it and use it against this tune to see if there is something you missed.

IMO
The real question should be why are you logging LTFT, STFT and O2 voltage when you don't want them to control fueling and why so many PIDs?
The channels count is sky high.

[LS1_Dragster]

Fuel trims are 0 because the computer isnt going into semi-open loop and modifying the fuel.

I have no idea how to use scripts. And it's a different OS.

I logged LTFT to see if they are being used, as in going into closed loop. It was just another place I was looking for answers.

I'm logging STFT and O2's because that's were you see the computer trying to maintain a 14.63 AFR, hence semi-open loop. Have you used semi-open loop?

See below the other cars log and tun file. You can see at frame 1283 the computer goes into closed loop mode and the O2's start dancing like they're supposed to.

[joecar]

Is your VE table correct (BEN equals 1.00)...?

[LS1_Dragster]

They are getting closer but I'm not finished yet.

Here's a more current log of driving, I'm working out the shifting issues before I tackle the AutoVE. Right now it shifts really hard on the 1-2 and soft on the 2-3. It has a shift kit and I'm just about ready to remove it and go completely back to stock! I had a supercharger and an Ed Wright tune on it and it always shifted too early with his tune. I can tell you this though, it has NEVER ran this strong before, the throttle is so crisp now. I kinda wish I left the supercharger on and did this tuning, but the dragsters getting the supercharger!

[mr.prick]

Semi-OL = Use O2 With Open Loop? (STFT)
I'm not hip to the semi-OL thing,
I assumed with commanded AFR table @ 14.63 that is SOL.
Does this OS have {B4206}?

STFTs are still 0%, does that = no SOL?

[LS1_Dragster]

Correct, it will use the O2's to maintain 14.63AFR, nice for idle and cruising.

Yes it has B4206 and all values are all 255 per the manual.

Correct, 0's mean no SOL. If you look at the firebird log you will see it in action at frame 1283.

[LS1_Dragster]

Could there be a problem with 0202003? 01270003 works great.

EFILive techs with 0202003, can you setup a car in semi-open loop just to see if it works on yours?

Lee