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Salvage Yard Supercharging: Adding 50 Percent More Power for About 200 Bucks

How to make your own DIY supercharger setup.

Featured makes: Mazda
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How Turbos Work

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

Is Water Injection a Cheap Substitute for Race Gas?

We visited Mach V Motorsports to find out.

Featured makes: Subaru
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Six Steps to Maximize Your Manual Transmission

Manual transmissions are crude, simple devices.

How a Twin-Clutch Transmission Works

A gearbox for all drivers.

Blueprinting Aging Fuel Injectors Can Extend Life and Increase Results

The first thing we do whenever we pick up an older car is go through the fuel system.

Featured makes: Toyota
What Makes the Best Air Intake?

We built (and actually tested) different intake designs.

How to Modify the ND-Chassis Mazda MX-5: Tips From Good-Win Racing

We posed a simple question: What are the three most important modifications to make?

Featured makes: Mazda
From the GRM Vault: Heavy Duty

Miata need more power? Take things to 11.

Featured makes: Mazda
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