Can someone help me figure out my VAG readings? I think an O2 sensor is going south.
 

I've got a 98.5 2.8qm, GIAC chipped.
I've always got the long "term fuel trim" codes 17535 & 17537; 17549 & 17547 for as long as I can remember.

I've got lamda reading of -2.3
My O2 sensors readings have the following ranges:
O2 Sensor Bank1 -2.0 to -4.0
O2 Sensor Bank1 -6.3 to -11.0
My Mass Air Flow is at 3.4gal (just changed last summer)


These are all taken at idle. I don't have a
laptop.

Do these readings look normal for a chipped car?

You should log 3rd gear pulls...idle is kind of hard to judge.
 

I'm working out issues myself, but you numbers look fine on bank 1, I think... check around to look for the right a/f long-term fuel trims. To give you an idea (I have a T-28) and I'm around -.02 and -3.2. When I was super rich I was running 25 for fuel trims.

I'm working on the laptop now.