6637

Not sure if I can post links from other boards, but stumbled across this and it's great!! Did some looking around and didn't see anything similar but if this has already been posted I will apologize up front. I am not taking any credit for this, simple copy and paste.. All the pictures are in...

Fellas, I'm a new guy on here and I have a late '99 7.3. Its all stock except the previous owner cut off the muffler and put a patch in the exhaust pipe. I'm wanting to do the 6637 intake mod pretty soon and a chip eventually. My goal is more power and fuel efficiency. One of my buddies with a...

Will a napa 6637 filter fit on k&n intake tubes? i have a k&n and I know they are bad want rid of it.