P.e. mode tables are off in open loop

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June 15th, 2012
smslyguy

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P.e. mode tables are off in open loop

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.
June 15th, 2012
joecar

Post your tune file also.
June 15th, 2012
BLK02WS6

X2 - post the tune...
June 15th, 2012
swingtan

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.
June 15th, 2012
joecar

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.
June 16th, 2012
smslyguy

Quote:

Originally Posted by swingtan

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??
June 16th, 2012
smslyguy

Quote:

Originally Posted by swingtan

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.
June 16th, 2012
swingtan

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.
June 18th, 2012
smslyguy

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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.??