@StockishS197 I'm not certain it has a stock tune but I can check. Why do you ask, wouldn't a tune more likely make it faster or do you think it caused the plug issues possibly?
The plugs that were missing straps were basically finger tight. I will check the plugs again and compression, thanks!
Hello, I just purchased a 2011 Mustang GT 5.0 Manual with 3.73 rear gear with 125,000 miles. The car had a few known issues when I bought it but have fixed most of them. One major issue was a horrible misfire it developed on my 3 hour drive home. When I got home I did plugs and coils and found...