I have an 05 XB and recently installed the Greddy S/C and also got an EBAY cold air intake to get the sweet, sweet whine. Anyways my problem is that when at a stop it sometimes has a moment of just pause, the car dosent accelerate just kinda like its stauled and then after about 1 sec later it goes and the S/C kicks in. BTW I added a boost gauge and under hard acc. Im running 7lbs of boost but on regular load I only get 5lbs. Im actually even thinking of putting my box back to stock and selling the S/C but being a new member. I guess I was a longtime viewer but just recently decided to register. Anyone interested Im located in So. Cal. I can also install it. email me for more details. Tavo111@yahoo.com