Catless downpipes
I have a 2014 Audi A4 B8.5 and I am about to make the big jump to stage 2. I obviously have looked at different downpipes and really want to run catless.
The only problem I face there is I live in a state where I have to pass emissions. Has anyone ran catless in a state like this? How did you do it?
O2 sensor spacers? Special tune?
Any help or suggestions would help!!
u/wobblysoup89 — 1 day ago