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How a Twin-Clutch Transmission Works

A gearbox for all drivers.

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How Turbos Work

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

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
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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
Zesty Italian

Tech Tips for Your Fiat 500 Abarth.

Featured makes: Abarth , Fiat
Tech Tips: Porsche Boxster

Can you live with an older Boxster?

Featured makes: Porsche
Veggie Tales

Al Taylor intends to clean up with his soy-fueled racer.

Featured makes: BMW
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