Mine pulled 161rwkw on around 10-11 psi with a pod and cat back. Compliance cat and standard dump, front.
Got a strip near? run it down the track and see what MPH your getting. thats a good indication.
Again for reference, with my 161rwkw my car pulls 97ish mph, so i think its around what it it should be when hauling 1450+kg down the track