Or a 250 cubic-inch (4-liter) engine with 300 horsepower would best match with a 3-inch exhaust pipe. As the size of the engine and horsepower increase, equating an inch in diameter for every 100 ...

Proper exhaust-pipe size is a function of both engine output and displacement. The higher the engine's output, the larger the pipes should be. Likewise, larger engine displacements call for bigger ...

There are a number of formulas to help establish exhaust pipe size, but for an engine displacing 300 to 350 ci and producing 250 to 350 hp, 2-1/4 to 2-1/2-inch dual pipes work well.

Pipe size directly affects power output. Go large—like 3-inches in diameter—and you will gain horsepower but lose torque. Go conservative on the order of 2 1/4 to 2 1/2 inches and you gain torque.

Typically, you'll see a 20 percent reduction in the inside diameter of a crimped pipe compared to a mandrel-bent pipe. "If you're mandrel-bending a 2.25-inch exhaust, it will flow as well as 2.5 ...

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 ...

Four exhaust pipes sticking out the rear of a car might seem purely cosmetic, and in many cases, they are. But in others, especially in high-performance vehicles with over 1000 horsepower , quad ...

Corsa Performance Exhaust Systems is offering up new cat-back pipes for full-size GM SUVs equipped with the naturally aspirated 5.3L V8 L84 gasoline engine.

Or a 250 cubic-inch (4-liter) engine with 300 horsepower would best match with a 3-inch exhaust pipe. As the size of the engine and horsepower increase, equating an inch in diameter for every 100 ...