Help with my emissions!
Hey guys! im new to this forum! just need a little help with my emissions for obd2 in CO! so my current setup is a full turbo back exhaust. catless uppipe, downpipe and midpipe. Obviously i know i need cats to pass emissions. I dont have any stock emissions equipment besides my downpipe. So will i pass emissions still if i just throw on my stock downpipe? and throw my wrx back to its stock tune instead of my stage 2 that i currently have on? and still leave my up pipe and midpipe catless?