Originally Posted by Jeff@TopGearSolutions
To answer your question, yes. I'm confused though because the HPF is the farthest thing from drone free. On the scale of 1-10. 10 being loudest. The HPF is about an 8. With 10 being completely open straight pipes and/or open downpipes.
Can you suggest a good alternative to HPF. Based on YT videos (havent heard a 335i in person only 135i) I really like the sound but not sure what other brands would sound similiar.