I just installed mine, it's the 50/50 dual port version. Probably the first thing I noticed was it holds boost better, like when I hit peak boost it stays there and does not taper off. Second thing is the 50/50 is a win, at least with a 6mt car. I like that it vents some for sound, and recircs the other back into the intake. Another thing I noticed is that I don't lose as much turbo spool between shifts ?, wasn't expecting that one but that is what the boost gauge tells me (aftermarket ProSport DBG, NOT the OEM lol) Overall the butt dyno says its a tad quicker, the sound is fun, and it is well built.