E3six,
You got all of it before the chip and cams, right? I supposed u didn't remap the ecu after u put in BBTB, Standard M50 manifold and open port K&N. All this mods will alter your AFR. To be precise it will show lean AFR on the dyno that will translate even leaner figure for on the road driving. This was the main reason why u didn't felt any increase in performance. A leaner AFR will make u car feels almost std. Let alone response. What u should have done was to remap the ori ecu to compensate the higher amount of air that was entering your head with all the mods.
Rgds.