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Split graphic comparing turbocharger boost at sea level and high altitude, showing identical 15 psi boost but greater pressure ratio and turbo speed at elevation.

Does Altitude Affect Turbo Boost and Turbocharger Speed?

Turbo engines handle elevation better than naturally aspirated engines, but maintaining the same boost can require greater pressure ratio and turbo speed.

How To Donate Your Car

Donating your vehicle to charity is a simple process, but one that most people do not fully understand. After all most companies require just...
California used-car buyer reviewing dealership paperwork under the new three-day CARS Act cancellation law

California’s New Three-Day Used-Car Return Law Is Now in Effect

California’s new CARS Act gives eligible used-car buyers three days to return vehicles priced under $50,000. Here’s how the mileage limit, fees, refunds and dealer requirements work.
Worn six-rib serpentine belt beside an engine accessory pulley showing signs of rib wear and deterioration.

Your Serpentine Belt Could Be Failing Without Making a Sound — Here’s What Every...

Your serpentine belt could be dangerously worn without showing a single crack. Discover seven warning signs, why modern EPDM belts fail differently, and how to avoid an expensive roadside breakdown.

How To Test a Honda Odyssey Ignition Coil

Issues with your Honda Odyssey Ignition Coil can lead to ignition misfire and lack of power. When your spark plugs aren't getting the signals or...

How To Smog your Honda Swap

Emission tests and smog tests are a difficult roadblock for any engine swapper, and today we'll be showing you how to smog your Honda...

How To Test a Ford Mustang Mass Airflow Sensor

The MAF sensor in your Ford is otherwise known as the Mustang Mass Airflow Sensor. The MAF is responsible for reading the airflow entering your...
Performance drivetrain gear-ratio calculation showing how engine RPM, transmission ratio, differential gearing and tire diameter determine vehicle speed.

How to Calculate Vehicle Speed by Gear Ratio, Tire Size and RPM

Choosing a transmission based only on horsepower capacity is one of the easiest ways to build a drivetrain that looks fantastic on...