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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, ...

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How to Form Your Own Custom Foam Seat Insert

We all know that a proper driving position is key to best performance behind the wheel, but maintaining it in the face of physics can be daunting. The easy solution ...

Suspension Bushings Are Small Yet Important Pieces of Your Suspension System

Pushing your car to the limit? Have you thought about your bushings lately?

Is a Water/Methanol Injection Kit the Tuning Aid You Need?

The premise behind water injection is simple: Squirt a mixture of water and methanol–windshield washer fluid, basically–into the engine’s combustion chamber to cool the intake charge and prevent detonation.

Easy ND Mazda MX-5 Performance Tips from Good-Win Racing

What are the three most important modifications to make on an ND MX-5? Good-Win Racing’s Brian Goodwin gave us two separate lists, one for street and autocross, and another for ...

How to Accurately Measure Your Compression Ratio

After building an engine, the bombardment of questions soon follows. Unfortunately, you might not know the answer to one important question: What is your engine’s compression ratio?

Before Heading Back to the Action, Take a Good Look at Your Safety Gear

As the racing world comes back online, bit by bit and likely with some new rules, here's a question to ponder: Is your gear ready?

Column: Pieces, Parts and the Ones That Sometimes Break

Replacing broken parts kinda sucks. Replacing parts that you just replaced really sucks.

How to Dyno Your Anti-Roll Bars at Home

How to accurately compare one anti-roll bar against another? Measure them.

Fuel Tips: Lawn and Garden Equipment Needs the Proper Fuel, Too

Like our performance cars, the small engines in lawn equipment can have special fuel requirements. A biggie that helps small engine performance: Fuel that is free from moisture.

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