What is a “Y-pipe”?
That is the exhaust pipe that (front to back) splits one-into-two under the firewall to the left and right sides of the engine and then each side splits into front and rear cylinders.
Back in the early 1990s it was the single most expensive ehaust part in the foriegn-auto-parts catalog I checked. They’re all stainless-steel now so it’s unlikely to fail until the car is very old — by then if the car isn’t worth a lot, it ain’t worth a Y-pipe...
Been driving Subarus for over 20 years. Had them with as much as 200,000 on them. Current 2007 Impreza Wagon has 125k and still getting 30 on the highway. Anyone asks “why Japanese” I tell them when an American car company makes an all wheel drive compact with a manual transmission, I’ll look at it.