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Hello, I have been having trouble with my 2013 caddilac ats 2.5L. The car is currently stock.

I have
1. Replaced upstream O2 sensor
2. Replaced downstream O2 sensor
3. Replaced spark plugs...

I have this one but the car is not finished yet. How do you like the nexus WB?

i have an 03 with the same problem but im not tuning with a wideband. (my wideband is on backorder) but all I have right now is full exhaust and an vararam intake

I am currently running rich.
...

wow! stand alone data logging and real time tuning.
Keep up the great work

Does anyone use the PLX-R500?

If my computer crashes and I lose everything (have to format and completely erase the computer) Do I have to buy new credits or am I still licensed for that car?