Originally Posted by ChevmaninaFord
I've changed my exhaust enough, I was just trying to find out why the Fords were different, thanks for all the help. My Dynomax Bullet is pretty loud, I just wish it would idle louder.
the before and after o2 is to make the engine run more cleaner, it gives more info to the computer to control the fuel air ratio: and if you wnat a louder exhuast you may be able to just change the muffler to a glass pack or just gut the muffler
i have done that
