Weather here is no good so can't do no drive or fly bys
Do you live in a state with emissions testing? I live in California. Will you pass smog if you put any cats on there as long as there as long as they look about right? Assuming they function acceptably of course. What kind of cats did you use?
I put manga flows hi flos I don't have emissions here for the year but the cats works as they should so it would pass out buy you