Exhausting Work

Metal Fatigues, rusts, and falls apart with time. Even "stainless steel" eventually succumbs to oxidation. The exhaust on any vehicle gets exposed to the worst of the lot. Vibration, expansion and contraction from heat, exposure to the elements, and exposure to debris on the road. Eventually the system on my Rover failed, breaking a weld just after the muffler (thankfully, so it did not get any louder) and needed to be replaced.

Land Rovers are not known for the great economy, with full time four wheel drive, the aerodynamics of a small garden shed, heavy weight, and a largish V8 engine, they simply cannot compete with a Prius in terms of economical use. Combine all that with it's need for premium fuel, and you can see why I want to do what I can to increase how many miles I can go in a gallon.

I also had a bad catalyst and she needed new Oxygen Sensors. Before everything was replaced, I was getting a dismal 9 miles to the gallon and leaving a cloud of unburnt hydrocarbons in the form of a cloud of soot from every stop.  Replacing everything from the Manifolds back with a Stainless Steel Magnaflow system did wonders. Now She is up to almost 16mpg with a slightly throatier sound.