Hey guys just got myself an 03 evo8, with 42,000 miles and it is very lightly modifie...-HKS TBE w/ cat -HKS Suction Intake -HKS Grounding Kit -Turbo XS fmic -Greddy Type-S bov -Walbro 255 fuel pump -Cooling shroud -Samco upper and lower radiator hose -Stiff shifter bushings, -Autometer Gauges (Boost, Oil Pressure, EGT). -3-gauge pillar mount -APR GT3 side mirrors(Carbon Fiber)..my question is that when i shift at high rpm the bov does this fluttering noise...Is there a way to fix this,or whats the best solution (without having to swap bov)? Thanx

 

adjusting the softness/hardness of it might work, but I am just a n00b