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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
From what I understand if you remove smog pump its best to remove cats too. The cats can get clogged up pretty fast with the smog pump gone. I would get an off road Hpipe and be done with it. Most off road pipes I seen didn't have a place for smog pump. I could be wrong maybe someone else can shine some light on this.
i do have and o/r mac h-pipe but it still has the tube for the line to hook into...i can hear the exhaust coming out of it and i want to plug but i do not know with what.
i put a MAC pchamber in my car last weekend what we did was hit the end of elbow tube and treaded and old spark plug in there with locktight on it then broke the end of the plug off lol it works
You can use just about anything. It's not threaded, or at least shouldn't be. So just find anything that will hold and put it there. Perhaps find a huge bolt and weld it in there
here's what i did. i cut off the tube sticking out of the exhaust pipe. cut a piece an inch long off that tube. cut piece down side. flattened it out. brazed the flat piece over the hole. works and looks great!