Obv more boxes you take out louder it gets.. Also more boxes you take out more pressure you lose.. On my gsi ive got a backbox and thats it n thats loud but i have a loss of pressure and sometimes splutters or misfires but very rarely.. If you went mani n decat you could always add another box after the cat to bring the noise down.. Im thinking of putting a resonated section in rather than my straight through after the cat
Bookmarks