Adding real horsepower without tearing your car down to the firewall is not a fantasy. With the right mix of tuning, airflow, ...

While electric and hybrid power trains are leading in the performance race, when it comes to pure internal combustion engines, you'd think the only way to achieve horsepower heaven would be to get a ...

One of the key elements that supports Kenworth's reputation for dependability and driver-oriented engineering is its legendary engines. Whether you're operating in heavy vocational roles or hauling ...