To big of exhaust?

[JLDickmon]

Can you have to big of a exhaust system? A friend has a 99 excursion with 6 position tuner and 4" no muffler exhaust. Another friend has a 01 truck and same tuner and 6" exhaust and he seems to think it hurt him to go with that big of exhaust? If not is there any benefit to 6" exhaust as i am getting readt to buy a truck and mod it.

6" is OVERKILL
4" is preferred.
the biggest choke point is the baby's butt right before the turbo.. but you need it (see "velocity" in Zookie's article)
most guys report a drop in exhaust temps with the 4" and it flows enough volume for 99.9999% of applications.

I'm pretty sure I'm going to do a DynoMax turbo-back system when something finally rots out on my OE exhaust.. that way, if I do something stupid like back into a snow bank and kink a pipe, a new one is a phone call away.

 

[BIG JOE]

Aero turbine? Never heard of it. What is it?

Mufflers | Aero Turbine Exhaust - Performance Parts

Thanx JL..

Joe