It's pretty wierd, but I'm curious if this happened to anyone else... I put a Turbosmart MBC (boo this item... switching with the Hallman Pro from my Eclipse) on my Evo IX about a month ago and set it at ~22psi. The **** was that when it tapered, it tapered BAD. It would end up around ~16psi by 7000rpm's. Fast foward to yesterday... I installed a Buschur intake filter. Now my boost will hit ~22psi and only taper to ~20. It's pretty flippin' sweet, but is it normal? Mods installed are the intake, boost controller and TurboXS RFL TBE.