I have an 05 sti.
When I bought the car I found a Bosch 15019 in the trunk still in the box.
After talking to Cobb they told me I needed to buy a wideband O2 and run the controller to my PC along with AP to datalog.
So I bought the popular AEM UEGO got it all wired up.
Researching the Bosch sensor, it looks like a direct fit wideband.
If so, why couldn't I use it, and just datalog everything through my AP?
Why did Cobb tell me to buy a different one?