In my opinion one of the best valves ever made, my car had one when I bought it, reliable and performance is great, mine used to chatter low boost n loud dump high boost but have it your way cause there adjustable oh and rare getting
i know i bought it from ya its laying in my store fucked alone with the new version one thats also naked 2 the both jamed shut work ace when they did tho . iv still got he shinny pipe ina