A tuned exhaust, along with a bigger carburetor, high-flow intake manifold and high-lift, long-duration camshaft, increased the amount of air and fuel available to the engine--voilà, more power ...

For reference, a stainless steel cat-back exhaust kit for a 2008 to 2014 Dodge Challenger with a 5.4L, 6.1L, or 6.4L HEMI V8 ...

Your Cummins's exhaust manifold plays a significant role in ensuring your vehicle is running at its best. Here's what will happen if you drive without one.

This test involved comparing the manifolds to the headers and not so much the attending full exhaust system. Run with the stock manifolds, the Mast-headed 427 stroker produced 661 hp at 6,700 rpm ...