I have a 07 screw 5.4 with a Whipple supercharger running 10# boost. I want the quietest dual 3" setup possible. From the headers back that is.Im not into the whole screaming exhaust thing. I would rather hear the blower whine.

 

Not sure what the point of having headers, or a v8 for that matter is, if you want it quiet.

 

He wants quiet power. I want the same thing. Whats wrong with having a sleeper truck?

The only thing I can say is find a really quiet muffler that wont be restrictive, buy 2 and do duals. Thats what I am thinking about doing.

 

True dual 22" Magnaflows with 18" body Magnaflow round body mufflers in the intermediate pipes, no custom tips.

 

Considering a sleeper is something you hear when you get on it, this guy doesn't seem to want to hear it at all.

 

4 mufflers?

 

I would start with dual 22" and then add more later if needed.

 

All straight through, will perform like straights regardless. He wants quiet, that will be stock quiet with LTs & hi-flows.