Right now I've got a 3 in 3 out Aero 3030 muffler with 3" piping from the muffler back.

Let's say I ran true duals, straight pipe.

What size piping would I use, 2 1/4" or 2 1/2"?

Performance difference between this and my current setup?

 

Wait 3 inlets and 3 outlets? How does that work?

 

3 in 3 out meaning 3" in and 3" out.

 

im doing 2.5" piping into true dual 3" in 3" out and back out 2.5" tailpipes

 

true duals with 3" diameter mufflers? AND they are flowmasters? Talk about torque destruction...

 

Ohhhh.

 

2.5...you don't need 3" its going to kill performance

 

couldn't be happier with my 2.25" true dual setup, gives me great tq in my van where i normally drive- 1800-4000 rpm range-phil