4 or 5 inch exhaust?

[tlee]

About to put a straight pipe on my 05 6.0 just dont know whether to go with the 4 or 5 inch straight pipe, is there going to be that much difference?

[choupique108]

5 inch is gonna be for looks and sounds mainly. no real performance difference. i have a 5 inch and i love it. If you can get the 5 by all means get it. Just the sound is worth it.

[fordfan30]

what he said

[Galaxie]

I have 4". My friend with the same truck and same mods has 5". Trucks are the same speed, his sounds a bit better. My truck is a little more raspy up high where his isnt breaking up.

Go 5" if you can. The down pipe will suck to instal tho. Mine took 3 min where we were playing to get his in for about 20 min.

[Komatsu3816]

go 5" just did mine and love how it sounds go with diamond eye or someone who has a 4 inch downpipe to get the complete benefits

[tlee]

5 inch it is then thanks for the help

[JBlrmker]

Duals sound pretty good. But if I did it again I would go 5" even though i dont know what they sound like.