It's crystal clear we've hit a power WALL running stock frame turbos. It's why despite building the heads/motor/or whatever else tricks you can muster there's only a 30-40 hp delta between owners that just bolt in upgraded turbos and shops with "race cars" running them with fully built setups. Not much of a difference at all. It's also why you have HUGE torque numbers down low yet they CAN'T hold the torque near redline. Big drop offs. The stock frame exhaust turbines simply choke these motors up top and there's not much we can do about it...
So the question is, WHEN are we going to finalllly see a vendor or someone simply develop larger and better exhaust manifold allowing for LARGER frame turbos OR a large single turbo setup? So that we can push well past this BS ~700whp barrier that nearly ALL the "upgraded" turbos share?