threegenpowerstroke98
Member
Hey guys, so I come from a 7.3 background and am newer to the 6.7's. anyways, it's getting time for me to replace my air filter and was thinking going the 6637 route as everybody who mods their 7.3 goes that way. Was wondering if anybody has done it and has any notes or points worth sharing. Besides the 6637 and a piece of 3inch od exhaust pipe what else whould I get, do I need any clams or anything?