Sweet!
GrimmSpeed does it again. Power gains with turbo flutter and BPV noise, who doesn't want that?! I had this item installed with many other bits and then got a pro-tune. Massive difference. Very stealthy cold air intake while utilizing the stock snorkel (although I wouldn't mind a snorkel with a tad larger front opening to increase air flow). Not sure where the difference is with the boost solenoid, but I know that it builds boost well and seems to maintain it well while accelerating.