I agree Dale, The compressor must be running out of efficiency so its a losing battle but there is always a little more in it. I enjoy fine tuning the setup for greater flow.
How the power comes on is equally important. The 1.06 comes on a little softer, more linear and as such the tyres don't seem to break traction easily. The auto/stally would help too. I really need to get the front diff in though, its scary in the wet in rwd.
I have a retune next weekend and plan to try out the United e85, perhaps I can gain a little more from that? I also dropped the water temps by 10 degrees, back to 80, it can only help I guess. Hopefully it will take a little more boost this time. The plan is to make a few Subaru owners sad at the dyno day I have coming up.