And a bit more data.. Here are three graphs at different boost levels. Wastegate, 22.5psi, and 24psi. Red and Blue show pre and post intercooler pressure levels, purple and yellow show pre and post intercooler temperatures, and green manifold pressure.

A few interesting observations: The Intercooler is working very very well. You can see the rise in temperature going into the intercooler going as high as 240F, but air temp coming out is just 10 degrees above ambient. This efficiency would certainly change with more time at high boost. Overall output temperatures at this boost level is very good. I was seeing about 50 degrees F hotter with the 7670 at the same boost level.

Pressure post intercooler, but pre throttle body is the most variant. I suspect that is related to the convoluted path, as well as the throttle body disruption. It is interesting to see that to get manifold pressure of 24psi, the turbo is pushing out at almost 28psi.

The fourth graph is a zoom in of the pressures post bypass valve opening event. In this setup the bypass valve is on the turbo itself, which is pretty far away from the closing throttle plate. You can see the oscillations as the pressure wave moves from the throttle plate, through the intercooler, and to turbo outlet. That looks to be about 9Hz, and I would assume that frequency is correlated to the length of pipe between the two end points. The post intercooler signal is stronger, which makes sense giving the damping from the intercooler.