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Tested: See how catalytic converters perform on the dyno

Are catalytic converters just a cork in the system?

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How Turbochargers Work

Ever wondered how a turbocharger makes your engine produce more power?

How to build an inexpensive, quiet exhaust that doesn’t cost horsepower

Aftermarket exhaust systems are a great way to increase performance, but they can leave the neighbors plugging their ears and muttering. Here's how to find a good balance of performance, …

Mazda , MG
Swap Science: Engine, Steering, and Exhaust Fitment

Our strategy has always been to place the engine low, back and centered, then modify around it. That in itself isn’t usually too hard, but sooner or later you need …

BMW
Executive Decisions

Finding the Perfect Exhaust System for Our BMW 335i

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