Hey guys,
Got a custom hardpipe made to go from my highflow 21U to stock airbox on my R33.
They made bungs for the breath and bov return.
Seems to hold boost fine but now the car sounds N/A, no audible whoosh on decel. I can only just hear the bov if I take off the airbox cover and filter.
From what I've been told by others it should be louder with a hard pipe not significantly quieter.
Just surprised and wondering if they're maybe another problem ie bov not working properly.