2.5 Inch vs 3 Inch Exhaust – What is the Power Difference?

In the automotive community, there are topics that are talked about over and over and over again as the dead horse is beaten and opinions and tempers booth fly.

It could be anything from an argument of displacement vs power adder to if an import is better than a domestic or vice versa. Car guys will argue about a lot.

One of the topics of discussion is which kind of exhaust is best to make the most power in your application. There are a whole variety of setups to choose from, after all.

Instead of just sitting around and talking about it, this time, we check out an experiment that actually puts this subject of discussion under the microscope.

Check out the video below that puts a 600+ horsepower 454ci Chevrolet on the chopping block to try out some different exhaust to see if there are really any noticeable gains.