I have an 03 Ram with the Hemi, shoudl I go with 2.5 or 3 inch pipes? I was looking at these two systems and the only difference I really see is the aluminized steel and the size:

Aluminized 2.5 inch
http://www.flowmastermufflers.com/cg...ter/17387.html

Steel, 3 inch
http://www.flowmastermufflers.com/cg...ter/17375.html

Thanks for any help!

 

You'll get the same results from either system.

 

With 3" dual tailpipes, you will loose low end power, gain top end power. The best option is to go 3" single out, but since that's not on your list, go with the 2-1/2" dual tailpipes. That will maintain the low end power.