Which one is louder? or is their a difference?

 

what brand exhaust is this?

 

You definitely have to bve more informative please. Gibson Extreme cat-back? or Cherrybomb Extreme muffler with either tailpipes straight out or 45'd?

 

The Gibson Extreme Dual Exhaust system may not be as loud as some, but the tone is rich and there is no drone in the cab... Performance wise the Gibson delivers a very noticeable improvement especially if coupled with a CAI and a custom tune...

 

Gibson Cat back exhaust

 

I like Gibson... to get some serious sound from it, I would get the extreme get get 2 maggie hi flow cats to replace your rear cats. Gibsons are deep and very nice sounding IMO.

 

weak sauce

 

Here is one
looks like a si/so

http://www.youtube.com/watch?v=_umgFD8wQzk

 

http://www.youtube.com/watch?v=pNHywGoKJ6U

 

im sorry, but both of those sound terrible. sounds like a weaker flowmaster.