Exhuast sound

[mattypsd]

Do exhaust tips determine how the truck sounds at all or is it for looks only.
I read somewhere it has to be 18 inches or longer to make a sound difference.
I have a 4 inch straight pipe exhaust but want the deep sound of the 5 or 6 inch stacks.. would A exhuast tip do the job?

[bigwhite7.3stroker]

I have a 6 inch tip on my 4 inch exhaust and I think it has a deeper tone to it than without it mine is around 18 inches long.

[6.0 paul]

I run a 5" all the way to a 6" tip very deep & loud no cat no muf

[Dirk]

A larger tip will change the sound on any exhaust system.