ok so i gotta get my car to pass pa emissions, it throws a p0420 code because of a high flow cat. if i get a trifecta tune and the code tuned off, can i still pass a pa inspection? or will the inspection computer fail it for not having the p0420 code. the other option is to put the stock downpipe back on for the test, but there is alot of snow on the ground and i dont have a garage. so that really would be unpleasant, tuning would be much easyer and give more hp. just need to make sure it will pass if i get it tuned. anybody know if i can pass with a tune?