Open downpipe?

redmaro · 08-21-2007, 01:23 AM

Is there an hp gain with a open down pipe? Cause I have a 3" down pipe but it has this very restricted 2.5" Monza cat back. How loud is it with an open down pipe? Good?

08-21-2007, 01:23 AM	#1
redmaro walbro fp Join Date: Mar 2006 Location: arizona Posts: 432	Open downpipe? Is there an hp gain with a open down pipe? Cause I have a 3" down pipe but it has this very restricted 2.5" Monza cat back. How loud is it with an open down pipe? Good? __________________ MK3, Auto, Turbo.