When enabling closed loop after tuning in open loop....

92sihbk · Post by **92sihbk** » Thu Nov 25, 2010 9:07 pm

After I am finished tuning, I go to re-enable closed loop and when I do my air fuel ratio jumps everywhere. I've got it tuned to a pretty consistent 14.7 up to column 5 but as soon as I turn the stock narrowband back on the air fuel ratio jumps anywhere from 13.7 to 16.0.

Is there something Im missing, maybe some tweaking/adjustments I can make that will resolve this issue?

It almost seems as though the stock O2 sensor is "over correcting" itself if that makes any sense!

Thanks!!
Ryan

Johnny_9 · Post by **Johnny_9** » Fri Nov 26, 2010 12:24 am

Just guessing, dont know for sure...play around with the O2 volts close loop...try something higher say 0.6v and see what happens...

92sihbk · Post by **92sihbk** » Fri Nov 26, 2010 7:42 pm

tried your suggestion with no luck.

Anyone else ever run into this or does everyone just tune and never enable to stock narrowband sensor again?

Thanks!

Ryan :twisted:

Johnny_9 · Post by **Johnny_9** » Sat Nov 27, 2010 7:08 pm

what cams/engine specs?

please post your calibration and log. what strim values are u using?

92sihbk · Post by **92sihbk** » Sun Nov 28, 2010 4:18 pm

after searching around this forum some more, I found my answer and am pleased to say no more problem!!

I had to play with the " Rate of Change " values under the closed loop tab.

This forum rocks!

Thanks for the help Johnny 9

Johnny_9 · Post by **Johnny_9** » Wed Dec 01, 2010 1:07 am

92sihbk wrote:after searching around this forum some more, I found my answer and am pleased to say no more problem!!

I had to play with the " Rate of Change " values under the closed loop tab.

This forum rocks!

Thanks for the help Johnny 9

Did u make it faster or slower...pls share...what cams are u using?