When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have long tube off - road Y pipe going in to a single 3" to a 20" long turbo muffler with a single cutout just after the y. I think it sounds good closed no rasp quiet but can still definitely hear the cam.
Here is my car, E bay stainless longtube headers and y pipe into borla catback with the open plate. Its 100% stock Its actually a gen 1 old school carbed SBC.