Let me answer my own question....quite a bit


I took off the APS intake today getting it back to stock so Mastro can fix a problem and there was an immediate difference. Peak boost was down 1.5psi and the butt dyno showed a 17.36whp loss (plus or minus .05whp).

I thought i noticed a difference when i put it on, but when I took it off, it is very apparent. I really dislike the added noise of the intake, but I think its going back on for the power after the issue is sorted.