After the cat, the exhaust travels on to the resonators ... I have a rule: Never reuse any exhaust system bolt, nut or clamp. Ditto for rubber exhaust hangers--­­splurge on some new ones ...

So you've decided to take the leap and add a cat-back exhaust system to your car. Will it work without a tune? Here's what ...

As a compromise, we had to install the provided exhaust clamp in a way that risked picking up road debris. This still solved the problem, and there have been no leaks coming from the clap area.

The honeycomb-like center of the cat can break loose and get turned in the housing. Honestly, we enjoy doing exhaust work and have done enough to know a trick or two to make the job go a bit easier.

Sound, performance, and style were the main factors that motivated Dan Adams to choose an MBRP Pro Series 4-inch after-cat exhaust for his '06 Dodge Ram 3500 with the 5.9L Cummins. Although Dan's ...