well i know that the trd muffler sounds nice... does it add any power? any torque?

 

Honestly.... it'll add something, as the stock muffler is very, very restrictive, but don't expect the world from it....

It won't sound good if you put a aftermarket header on as well...

I'd look at other AB options, like the precisionmuffler.com setup, or some of the other options out there.