Question on dataloging for STFT

[makriluc]

Hi Guys.
What would cause, while dataloging, my Short Term Fuel Trim to be nil.
I have a flatline (data is at 1.0) while my other data looks good.
I'm in the process of tuning after a P1SC install. When I dataloged my data to my tuner two months ago, my bank 2 was going lean in the STFT. My tuner told me it could be a faulty injector on bank 2. So I had a second set on the same size injectors. I just replaced the four on bank 2 and now STFT reading is nil:shrug:

Thanks for your input

 

[encasedmetal]

STFT will read at 1.0 while in open loop. If your bank 1 is reading normally- you need to datalog o2 volts bank 2 to determine if your o2 sensor is faulty, which would cause your STFT reading to be off as well.

 

[makriluc]

Thanks for your input Endcasedmetal.
Both banks are reading nil.
I can't believe that both O2 went faulty at the same time, or maybe I'm really having bad luck.
My AFR also went on the rich side (between 10 and 11.5)

 

[encasedmetal]

Thanks for your input Endcasedmetal.
Both banks are reading nil.
I can't believe that both O2 went faulty at the same time, or maybe I'm really having bad luck.
My AFR also went on the rich side (between 10 and 11.5)

I have a feeling you're in OL. who's your tuner?

 

[makriluc]

Lasota Racing

 

[encasedmetal]

Lasota Racing

Don knows what he doing, so just send him the datalogs and don't worry about it. Do you have a wideband you can take readings from as well? definately include the o2 voltage from both banks in your datalog to him though.