no power enrichment on '06 trucks ??

[tblu92]

Because of the release of the 2007 truck line recently I have tuned several 2006 trucks & suv's . (pick-ups-yukons-denalis-tahoes---etc.)
The problem i am having is that after tuning them and then driving them to log various pids, I can't seem to get the vehicle to operate out of closed loop. The AFR's are always stuck on 14.63 at WOT---the 02 voltages still oscillate at WOT
and power enrichment mode is never activated---no matter what I've tried to do or change---And i've tried tons on things---I've changed all the normal things--took out all the delays--set the AFR @ RPM at 12.70--set the tps activation at 58% etc etc.

Do these vehicles ever operate in an open loop type status ( OL-DRI) to activate power enrichment???---Or do they always just run in a closed loop mode??----It seems that a few 06's have taken the changes and allowed me to change PE---but lately almost all won't----Anybody know ? Am I doing something wrong ? or is this the way they operate now??-- THKS Tom

[kbracing96]

What about the PE delay? Did you set it to 0?


Edit, never mind, I missed that part in your post

Post the tune maybe there's something your missing

[dc_justin]

What operating system are you running into these problems with? I've never had any problems making PE mode changes on 2006 trucks... 2007 Classics however do need a few more tables added to the calibration...

[tblu92]

What operating system are you running into these problems with? I've never had any problems making PE mode changes on 2006 trucks... 2007 Classics however do need a few more tables added to the calibration...

hello--the OS # is 12587811-----

[dc_justin]

Interesting. That's the OS I've been having great success with. Don't know what to say...

[kbracing96]

Here is his tune file Justin, I don't see anything he missed, but maybe you will