Had a different set of charges tubes and bov. HATED that no matter what i did the bov would hang open at part throttle cruising creating a big delay when getting back on throttle, sounded like crap, and blow off valve would never “go off” after a full throttle pull, resulting in bad compressor surge. Which is what these things are intended to prevent. Also those charge pipes fit “meh” at best. Pulled those off, put the factory hot side back on and this WSRD cold side with the turbosmart bov they offer with it. Fitment is 10/10. Functions 10/10. Everything just works like you’d expect it too, no more surge, not obnoxiously loud when it goes off, and if it hangs open at part throttle it’s not enough to even notice. Completely happy with the purchase. Should’ve got this from the beginning.