Originally Posted by Mikew2069
Why are these 1 3/4 and all of the others seem to be 1 7/8? Any dyno graphs? Curious how the smaller size could effect performance? Also what's the cell count on the cats?
Good question as we thought the same thing. We tried contacting them but communication seems to be somewhat of a problem through AU. I know that a lot of the N/A Coyote builds (Mustang) run 1 3/4 headers to keep some back pressure and those cars are running more horsepower then ours.
I can try again and get a number on the cell count.