Ny R is still running the stock recirc and it seems to be causing compressor surge coming off boost (chatter, flutter whatever you want to call it). Is it worthwhile upgrading to something better/aftermarket? If so what do you all suggest? Not into really loud psshhhhht dump valves. I ran Blitz venturi valves on previous cars and they sounded great but unsure if they would be easy to install on the R.