Most piping actually is 3" on the 2011+ GT's Toddo. They bumped it up due to the airflow increase and of course more power. But I can't remember what size the connections flanges were. I'm gonna look into it now to be sure.
The '11 GT's stock exhaust system's inconsistent layout certainly is a hindrance when it comes to horsepower. Starting at the catalytic converters, tubing progressively reduces from 3 to 2 3/4 inches, and down to 2 1/4 inches just before the H-pipe. It then steps back up to 2 3/4 inches after the H then back to almost 3 inches. The stock resonators are listed as 2 1/2-inch. However, we believe their actual inside diameter may be as small as 2-inch (to suppress noise). The pipe size once again jumps to 2 3/4-inch after the resonators and into the mufflers.
Found this article. So it was listed by Ford as a 3 inch system, but 5.0 magazine found some inconsistencies. So I'll see if I can find anyone who's put them on an older GT.
Sure do. I knew the new 5.0's had their issues, but I didn't realize how bad the exhaust setup really was until reading that. So I can only imagine how mean my 2011 could've sounded with an actual 3 in system lol.
I hear you. I already had one lol. So a Termi is def my next toy. But I think I'm going to keep this Cobra as well. This I'll turn into a race car eventually and my Termi I get will be my cruiser. Only because this car will be much more built by then lol. And besides this is paid for. No reason to get rid of it.
Yea besides this Cobra is still valued at over $8,000 (which will probably only go up as it gets closer to being classic and becomes more rare), and that's not counting the thousands into suspension work, brake/rotor work, interior, and of course the supercharger. So its def got value in it and is a great starting point. With some forged internals and swapping pullies for more boost its a more than capable car lol.