So we decided to stop at 35psi. We pushed 38 but the car wasn’t making any more power. We are hitting the limits of the intake manifold or turbo. Motor and fuel system are good for 1600whp so we have the headroom if I feel I need more but for now the pt7675 spools up nicely, has a great fat powerband and the engine is not working hard to make 1100whp with 35psi and 15* of timing. I may go slightly larger turbo but it will be at a sacrifice of midrange power and response.
Car drives great btw, the response is very similar to my old 3.0/pt6765 but on spring pressure alone it makes a little more than my old setup at max boost.
Ac works great and the engine temps were very good in stop and go traffic. Not bad for a street car. The sounds this car makes is sooo different than my old setup. The little extra displacement and compression is nice for low rpm cruising. I don’t feel like I’m lugging the engine as much under 2k rpm.