High flow cats
#1
Member
Thread Starter
High flow cats
I am wanting to put some high flow cats on my 04' 5.4L....I have a cat back exhaust but wanted to replace stock cats for some magnaflow high flow cats. If anyone has put these on, what are the part numbers for the cats you used, and did they make a difference? Thanks
#3
Only reason to is if there is an issue or you want more sound.
#4
Yeah, I just like to have an idea of stuff to do for if/when something goes wrong.