One thing you guys are failing to see, is Boost is a measurement of restriction. Providing there is no leaks, it is a good thing that OV10stang saw a loss of boost with just the manifold swap. The car is moving the same amount of air, and doing it more efficiently, so that is why you saw the loss of boost. I was hoping that the intake was worth more than 12 RWHP though. The best comparison is the way 0V10stang did it( The 363 to 351 RWHP comparison ). To restate what I am saying, it is good that the car made more power, it is good that it saw a loss of boost psi.
FWIW, Bringing the boost back up by adding parts and then comparing is not a fair comparison.
For those that are seeing big gains with the Fox Lake intake, are they just adding the P-51, or are they trying to keep the boost the same and those are the results they post? A good intake manifold on a boosted car should show a HP increase as well as a drop of boost psi. The trickflow does, but is it worth the $800.00 for that HP gain?