I agree with Westcoaststyle, I had mine open for a couple of months in the beginning, sounds like a moped, stinks, and very sooty...be prepared to clean your underhood area, and it also heats up the underhood area...

I've had the wastegate discharge plumbed back into my downpipe for a couple of years and it's really a much more civilized way to go. A side note, your exhaust note will sound more aggressive as well because now all the spent gases come out of one pipe...