Finished 3 bar SD TUNE. How do I return to closed loop?

[nitrorocket]

Finished 3 bar SD TUNE. How do I return to closed loop? The tutorial says not to floow the instructions to return to closed loop if you have a new O.S. with a 3 bar.

I need to run closed loop somehow. My actual AFR is changing alot depending on th eoutside temp. Perfect when 80 degrees out, lean when 50 degrees.

How do I stop this? Please help? Unless I missed something in the tutorial, I feel a little left out to dry!?!?!?

[GMPX]

You can't go back to 'true' closed loop with LTFT etc if you want to run the AFR MAP vs RPM table.
Basically now just change any cell in the AFR MAP vs RPM table to 14.63:1 AFR (Or EQ=1.00) and the PCM will use the O2 sensors for STFT, this solves AFR drift at idle etc.

Cheers,
Ross

P.S - Glad to hear it's all up and running, how's it feel to drive??.

[nitrorocket]

So what do I do for weather temp changes changing my AFR at WOT? What exact tables do I have to re-enable or change? I want to be able to drive the car whenever I want and not have to constantly manually change my VE map to compensate for the weather. Help!

The car is a monster. I ran to 13 psi yesterday and the car will spin the tires from any speed at a roll. Even at 100 mph! I should be putting down about 700-750 rwhp right now. I cannot even explain how much power the car has under boost. The difference between 9 psi and 13 psi feels like double!

[joecar]

He he he, I need this for my daily driver (it will wake me up in the mornings...)...

Rule the world.

[nitrorocket]

Anyone????

[bink]

So what do I do for weather temp changes changing my AFR at WOT? What exact tables do I have to re-enable or change? I want to be able to drive the car whenever I want and not have to constantly manually change my VE map to compensate for the weather. Help!

The car is a monster. I ran to 13 psi yesterday and the car will spin the tires from any speed at a roll. Even at 100 mph! I should be putting down about 700-750 rwhp right now. I cannot even explain how much power the car has under boost. The difference between 9 psi and 13 psi feels like double!

Hehehe... :lol:
Spooky Fun!!!

One of the guys on LS1Tech stated that his supercharger setup was done and asked what he should be looking for?? NoGo told him, "Tire Sales". FWIW.


Running that much boost I can't imagine atmospheric would have much effect on your AFR. I hope one of the Boost Gurus will chime in with the correct answer!!

Cheers,
joel

[GMPX]

What sort of error are we talking?, 0.5 AFR, 0.2AFR, 2AFR?.
We have been testing an AFR IAT correction table recently.

Cheers,
Ross

[Black02SS]

We have been testing an AFR IAT correction table recently.

Cheers,
Ross

Oh you have to give me some insight on this table. I have needed something like this all summer!!

[Tordne]

We have been testing an AFR IAT correction table recently.

OK, you got my attention too!!!

[GMPX]

We have been testing a new IAT VE multiplier table, basically to compensate for the problem some blown cars are seeing with this AFR error when the intake temp is hot.
Seems to be working fine, but it will involve me modifying the V3 O.S's again, it's not a simple change either :cry: I also plan to add in the ability to use a spare output on the PCM to switch 'something'.
For you guys all you will do is flash in an updated V3 and populate the new table and that's it, nothing else will need to change.
I hope to get onto that after SEMA (Like the other 100 things!!).

Cheers,
Ross

P.S - I feel so graphically inferior with the two posts above.