probablecause
Well-Known Member
- Joined
- Jul 20, 2008
- Messages
- 1,227
- Reaction score
- 1,807
Ok, so I pull the air filter out of my 2005 5.4L truck and rip off the long factory snorkel. The only thing left is the air filter body (with MAS) that connects to my throttle body. I fire the truck up and it immediately runs like shit. Pull the MASS and clean it and still runs like shit. Oh well, higher mileage truck so I put in a new MAS. Still runs like shit. I open the air filter insert where the air filter goes and I immediately here the sucking of air and the truck dies. I put the air filter back in and fire it back up and the truck runs perfect. I thought the MAS accounted for all of the extra air flow and would richen it up if needed. What am I missing here? Brendan