Hi guys , i was wondering if you could give me an idea on how many boxes to add to my new exhaust i had installed 2 days ago on my 330d , initially decided to go with no boxes which was a very bad idea, 63mm downpipe and straight exhaust all the way to the back!![Flyfun]( "Flyfun")
. Not a great idea for my likings , would one box at the back dampen the sound enough? Thanks (Did my exhaust at powerflow)
. Not a great idea for my likings , would one box at the back dampen the sound enough? Thanks (Did my exhaust at powerflow)