2004 Ford Harley Davidson Edition F-350 Power Stroke Diesel - Duals Are Cool

The stock catalytic converter unbolts, and the rest of the system is cut off with a Sawzall. The exhaust can be removed without cutting anything...

...but it requires unbolting different stuff. It was easier to cut the pipes in a few different places. Everything came off with ease.

A little grunt work with a chisel and hammer separates the catalytic converter from the intermediate pipe.

The only component leftover from the factory exhaust is the stock catalytic converter.

Anthony (right) receives a little help from his brother Jim (former Pro 5.0 racer and current NMRA Outlaw 10.5 class champion) removing the muffler. Anthony uses a breaker bar to help pop off the muffler hanger.

With the factory exhaust off, it's time to drop the truck to the ground and attack the last pipe from under the hood. The downpipe disconnects easily by unbolting the V-band clamp. After detaching the pipe, crawl under the truck and snake it out.

Here is a comparison of the MBRP downpipe (right) and the stock one (left). Not only is the aftermarket pipe larger, it's much straighter as well.

The stock cat is bolted to the downpipe using the factory flange, nuts, and bolts. MBRP supplies a new gasket to prevent any exhaust leaks.

Since one part number covers all size trucks, it's necessary to cut one of the pipes before attaching it to the catalytic converter. Our supercrew shortbed requires trimming the pipe to 29 inches. Anthony uses a straight edge to accurately measure from one end to the other and then marks it.

A quick cut with a saw, and we're ready to install the rest of the exhaust system.

Here is the wimpy stock exhaust (left) vs. the massive, stainless steel MBRP piping (right).

Use high-quality clamps throughout to fasten the pipes.