When does a T3/T4 60 trim work?, is it normal that it is at 4K revs? Options

[Conwa]

I recently installed a T3/T4 60 trim turbo on my 7afe, but is it normal that it start boosting at 4K revs?
I have a B16 manifold and a 2,5 inch downpipe.
It spools up @ about 3,5K but kicks in at 4K and stops at 6200 when it hits the rev limiter (of course)
Its running @ 0.45 Bar (7psi ?)

[playr158]

super 60 will puke on the top end if your running anything above 10psi.

good spool, so its fun to drive.

i highly doubt it would really....a lot of VW 1.8Ts use them and very successfully at that...
a 7afte isn't going to out flow the T3s60......plain and simple the T3/T4 in my research of the turbos for the 7afe are just too big...not to mention real world results....you want to get full boost by 3,000-3,200 any later and your really just moving out of the power band of the motor.
like i said a SMALL SMALL t3/t4 would work much better 40/47 trim a 60 trim t3/t4 is TOO LARGE, period.
we were using a t3/t4 50 trim on an EVO making 400+ whp getting full boost @ 4k-4,500rpm...