I didn't actually do anything to my Edge but did however receive a MagnaFlow CatBack Exhaust System. The workmanship is excellent. Jury is out on how it fits and if it adds to the vehicle. Amazon had these for $733 for the past 2 months. The market price had been running at $833. On Sunday Amazon's price dropped to $525, I pulled the trigger and literally watched MagnaFlow's quantity on hand drop from 6 to 5. A couple of days latter and the inventory is 0 and Amazon is saying they don't know when or if they'll get more in. Need a little warmer weather to crawl under it. It appears to be a very simple task.