My SFT for bank2 -10.9 and bank1 -3.1. Why are these so far apart at idle?
Here is a log file and copy of my tune.

 

If you can do another log but include HO2S11 and HO2S21, those are your factory O2 sensors, perhaps one of them is not functioning properly... OH and is your turbo a front mount or rear mount? Where are you O2 sensors located.

 

Turbo is front mounted and the bank1 in stock locations and bank2 is in the downpipe. I will also get log of the o2 sensors.

 

I have never logged much less tuned a Front mount turbo truck, but wouldn't what your seeing make sense? I mean bank1 should be roughly normal, but since bank2 has both exhaut sides running into it, wouldn't make sense that bank2 is twice what bank1 is? Or am i completely off? It would seem to me given your configuration to put both O2 sensors in the same pipe...

 

I know Kyles kits are set like this. I was just posting see if this was same for all turbo truck or do have bad sensor. I have another set o2 sensors at my house. When i drove the truck to ASU it was like -10 bank 2 and -3.1 on bank1 but when left ASU 4 hour later they both were saying -10 so I think it bad sensor.

 

Logging the O2s will probably show you the answer... Good luck, sorry I was not much help.

 

Your STFT are fine. Look at the AVERAGES, they tell a different story. Bank 1's are -.07 and your Bank 2's are -3.5, but nothing to stress about for short trims, they move around alot and yours look pretty good to me. The diff is mostly likely from the bank 2 being in the down pipe. Mine are right before the turbo, so closer to the cylinders. They don't add when in this configuration, the bank 2 will be an average of both banks. You scan looks fine to me.

 

So if get bank 1 +/- 3% than i should be good then.

 

Kyle do you have pic's where you mounted bank 2

 

Yes with STFT, that is perfectly exceptionable . STFT can move around a lot. They are what move LTFT, and IIRC, STFT have to be off about 10+% for an extended period of time to move a LTFT (if you had them) 1-2%, so keep that in mind