Hey guys, I've been looking at downpipes to go stage 2 on my 04 wrx. I was wondering how you guys pass the emission inspections with a modified exhaust. My area uses a visual check and the gas cap test.
Is it going to be difficult/impossible for me to pass emissions/inspection with a catted downpipe? If not, how hard (ie how much time) does it take to change the downpipe out for the factory one? If I do have to change back to stock to pass emissions, would it be a better idea to just buy a catless downpipe?
Thanks guys. I live in state college, pa in centre county. Any recommendations of nearby shops that are lenient would be great.