Dorman 674-559XD Passenger Side Ceramic Coated Exhaust Manifold Kit Compatible with Select Ford/Lincoln Models

Well I’ve been putting up with noisy exhaust since buying my Expedition some two years ago, first was the muffler with the full side seam blown out. I changed this but withing one week my left side manifold started, so I purchased the Dorman replacement, cleaned it thoroughly with paint thinner and then a few coats of silver high heat rust paint and installed it with virtually no troubles whatsoever. It wasn’t long after, maybe a whole week that the right side manifold let lose with that horrid sound. I did have troubles getting the old one off but found out later you need to undo the motor mount and jack up the engine a little lol Oh well it was a learning experience, the new one went on quickly from this point after cleaning and using high temp paint. It was when I got the courage to fire her up that things got weird, I turned the key, my starter engaged but I could barely hear that my engine was actually running. The sound was showroom sweet with not one exhaust leak anywhere. Unfortunately I now have another issue to investigate. Since I installed a stainless free flow muffler on it, I’m not getting the sound I was getting once I first installed it. I love properly tuned sound you get when you plant your foot to the floor with a good free flow exhaust but at least the awful sound from manifold leaks is gone, forever I pray, this has to be the ugliest sound any vehicle can make. Thank you again Dorman for a well made, perfect fitting product like all the others I’ve purchased and installed on my Expedition made by you!!!