As other guys have said boosts earlier and holds very well and holds it in a stable manner. Basically, even on idle the boost guage does not sit near zero anymore its like 1/5 of the way up. Torque builds quickly making the turbo more usable = better average power. I only have this and K&N Panel and I've noticed a good difference in limited testing.
Working installation on R34 below. Happy to help as others have helped me, as u can see I had some dramas But all good now. Mmm perhaps I should plug up that T piece. Next step for me is full CES Racing zorst, should get the silver service taxi moving nicely.