That looks top job 👍 with the valves just in the open like that I’m guessing they are making a good seal? And by your reply they make a noticeable difference between open and closed?

with the Mondeo i’d like to be able to open the valves and still get flames out the tailpipes though 😬 I’m still a kid at heart 🤣 I’ve seen some whole mufflers on eBay that have an integrated valve, when open the muffler is straight through, but when closed they are correctly baffled.

I've tried to think of a way of using valves like you have but the only decent solution is to have them on the back boxes themselves, I could cut the OEM back boxes up and weld the valves inside and make my own valved box but it’ll no doubt be fairly crusty in there already 🤣

https://rover.ebay.com/rover/0/0/0?m...2F173892983207