How Much Horsepower Does a Diesel Turbocharger Add?

A modified motor running under the hood of a sports car.

TL;DR Turbochargers in diesel engines increase horsepower by forcing more compressed, oxygen-rich air into the engine, enabling more efficient combustion and higher power output. Horsepower gains vary by setup, but generally, a properly matched turbocharger can increase diesel engine power by 30-40%. Turbo performance depends on multiple factors, including turbo size and design, engine strength, […]