Closed loop cruising AF jumping w/Datalog

peasly23 · Post by **peasly23** » Tue Jun 08, 2010 12:44 pm

So I had posted in another thread the problem I am having with closed loop where the car jumps between rich/lean but is fine in open loop. This problem happened when upgrading to latest version of SManager. (My older version was 2 or three versions old - upgraded last in August or September 09)

The differences in the datalog are Open Loop vs. Closed Loop. The jumping around is in Closed loop only.

I have a D16Z6 turbo'd and the previous tune was fine.
Stock P28 ECU with S300.

peasly23 · Post by **peasly23** » Tue Jun 08, 2010 12:51 pm

EDIT... I thought I had already upgraded to latest version of software but I was still on 1.4.5. I must've upgraded on my other laptop and not this one. I will reupload the new code and retest. I will repost when this is finished.

Sorry in advance.

peasly23 · Post by **peasly23** » Sat Jun 12, 2010 6:34 am

Update... I upgraded again to the newest version, and still same problem. I searched for Spunkster's calibration, and entered his values under the "rate of change" section and things are running much better now.

LTcxD2B · Post by **LTcxD2B** » Tue Jun 29, 2010 11:09 am

peasly23 wrote:Update... I upgraded again to the newest version, and still same problem. I searched for Spunkster's calibration, and entered his values under the "rate of change" section and things are running much better now.

where can i find this calibration?

diSTiNCt · Post by **diSTiNCt** » Tue Jun 29, 2010 1:18 pm

^ here is a copy of the calibration:

Revspeed · Post by **Revspeed** » Wed Jun 30, 2010 3:42 am

how do u know if its in closed loop or open loop?
the log is short and there s no short or long tern data nor is there anything that will show ur in closed loop........

beside ur runing too rich try between 16-lean lol.... (from 20+ inches of vaccum to about 8inches)
as long as the car doen t buck or so call hicup keep going lean

spoonskywalker · Post by **spoonskywalker** » Thu Jul 01, 2010 1:18 pm

peasly23 wrote:Update... I upgraded again to the newest version, and still same problem. I searched for Spunkster's calibration, and entered his values under the "rate of change" section and things are running much better now.

peasly23: can you upload your new calibration? I also got same problem with you. What value you put under "rate of change" section? :D

peasly23 · Post by **peasly23** » Thu Jul 01, 2010 2:26 pm

I put the same values as Spunkster.

spoonskywalker · Post by **spoonskywalker** » Fri Jul 02, 2010 12:17 am

Can you upload the current datalog after put the new values. Mine still not jumping. Any ideas? Here my calibration & datalog..

Don't Walk · Post by **Don't Walk** » Mon Jul 05, 2010 8:50 am

peasly23 wrote:I put the same values as Spunkster.

in regards to "Rate of Change" is that a motor specific? or is it something I can calculate to enter the values? or one of those trial and error thing to see which values work , I don't know how it works, my car is behaving the same way in the new version 1.4.7, jerks back and forth from 14:1 to 16:1 while cruising either 2500, 3000, or 3500rpm.....any input from someone here in the forum is appreciated....thanks