o2's are both switching at the same rate during this
here is normal acceleration, without surging, stft's... completely different

 

Your O2s should be showing full rich at WOT.

 

I know... these logs are at part throttle

 

Might be time to get back on the dyno with your tuner

 

Did you ever see what Justin posted about the OEM Bosch sensors ? I think ONELOWF posted this once. Anyway, there's a graph here comparing Motorcraft to Bosch and problems Bosch sensors have, not sure it will help, but take a look.

http://www.vmptuning.com/forum/showthread.php?t=825

 

I am my tuner... I can do everything on the street as I can on the dyno, but that would be pointless because the ONLY thing that is different in data logging is the STFT.

 

ok..i thought the best thing to do was go back with bosch 02's i think someone on here told me that when i decided to change mine,

 

Good reading... I am using motorcraft o2's...

 

You might try to force open loop and see what happens. More info without the O2s in the game.
(ECT_for_open_Loop - set to all zeros)
6% variation between stfts is too much....3-4% with aftermarket cams is the outer limit??

 

there's a live link 5.1.0?????

 

Ive been using it for a while

 

I will try that

 

This is all I have under open loop... dont see ECT_for_open_loop

 

keep at er joey, you and one low f are teaching me more lol

i think part of my problem may be my bosch o2's then, they flag rich intermittently, and the thread you showed me makes me question them more.


so how easy is SCT Adv. 3 to use?

btw, whats the "fuel open loop TP"? could that be what your looking for?

 

I thought I had the latest version, thanks, I'm downloading 5.1.0 right now