I could just be paranoid, but i was driving on the highway yesterday and dropped it into 4th. Watching my boost gauge on a straight piece of road it was fluctuating from ~16 to ~9 psi. You could feel the loose in power as it went down to 9psi and then the power would go back up as it went to 16psi. This all started happening after i installed my eurocode downpipe. This is very similar to what i had going on with a chip in my old 1.8t jetta gli. Anyone experiencing this or know of a solution.

one thing i could think of is the n75 valve that comes with the forge dv. Maybe that valve went? Opinions please.