The place I go to never has an issue before without cats but now they tell me that the Catalyst and Heated Catalyst are not enabled. Not sure if that's normal. I used to be tuned with uprev before with Berk test pipes. But now with the new GTR TT and ecutek it won't seem to work. They suggested mini catalyst O2 sensors,
O2 Simulator Mini Cat Cel Fix stainless steel Rear O2 sensor simulator. .
Any thoughts.