The car that I bought recently, a 2000 Saab 9.3 convertible, came with what I was told was an “upgraded” resonator muffler. Considering that the resonator muffler is louder than a conventional muffler, why is it better?

The 3.6 v6 in the Wrangler Unlimited is grossly underpowered. What is Chrysler planning on doing about this?