Bwahahahahaha
So I took the OEM check valve that was used for the intake resonator butterfly and installed it on the line to the J&S. Low end is even better now. I think it's getting time to put this thing on a dyno again, just to see what it pulls. I've always been sure that I could have broke 200 whp at 6 psi if I didn't have that damned low end problem. Now I don't have the problem, and I'm at 9 psi.