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View Full Version : P.e. mode tables are off in open loop


smslyguy
June 15th, 2012, 05:16 AM
I am running s.d. c.L. mode. My afr is fine at w.o.t. right at 12.5a.f.r. however its in between w.o.t. and step in throttle. What parameters could cause a rich spike in between w.o.t. transitions? It runs about 12.0-12.2 all the way till w.o.t. pulls..


When i run the car in o.l. it reads actually a little lean, around 13.0 til w.o.t. then it goes to 12.5. But when switch back to c.l. it starts the process all over again back to 12.2.. Something in closed loop is causing more fueling.. I just can't put my finger on it. Here is a copy of my o.l. log.
joecar
June 15th, 2012, 05:47 AM
Post your tune file also.
BLK02WS6
June 15th, 2012, 10:28 AM
X2 - post the tune...
swingtan
June 15th, 2012, 10:55 AM
Where are these "Rich" spikes? You mention that the issue is when you run CL, but the log file indicates it's an OL tune.

Do you mean the points in between gear changes where you are off and on the throttle? If so, then that's just fuel dynamics.

Simon.
joecar
June 15th, 2012, 11:33 AM
If your wideband AFR doesn't quite follow your commanded AFR, then several things might still need to be done, like putting correct data in the injector tables and correcting the VE table.
smslyguy
June 15th, 2012, 11:53 PM
Where are these "Rich" spikes? You mention that the issue is when you run CL, but the log file indicates it's an OL tune.

Do you mean the points in between gear changes where you are off and on the throttle? If so, then that's just fuel dynamics.

Simon.

I'm using my phone, I will post the tune and also a scan in c.l. when I get back to my computer.. joecar. The objectors are stock, can u or should u alter the stock settingd while using stock objectors??
smslyguy
June 15th, 2012, 11:57 PM
Where are these "Rich" spikes? You mention that the issue is when you run CL, but the log file indicates it's an OL tune.

Do you mean the points in between gear changes where you are off and on the throttle? If so, then that's just fuel dynamics.

Simon.
While in o.l. it is spot on or close, its when I switch it back to closed loop my a.f.r. drops down to 12.2 until w.o. then it hits its targeted a.f.r.
swingtan
June 16th, 2012, 09:20 AM
OK, that would be why we can't see the spikes then.... Post up the CL log and we can have a look at that.

Simon.
smslyguy
June 18th, 2012, 01:05 AM
Here is a copy of my c.l. scan.. Although of course on this scan it is closer to my desired a.f.r. Maybe cause i reflashed my p.c.m.??