About this episode
If you own a diesel truck, you have probably heard the endless debates about EGT or exhaust gas temperature. Is 1250°F the magic number? Will running too hot melt your pistons? Does turbine inlet temperature tell you more than your standard gauge? In this episode of the Power Driven Podcast we cut through the myths and share real-world experience from years of towing, racing, and building everything from stock 12-valves to four-digit horsepower competition trucks. We explain what EGT actually measures, how it relates to turbine inlet temperature, and why oil temperature often plays a bigger role in piston survival than EGT alone. We dive into what normal looks like on stock trucks, why the 1250°F limit is not one-size-fits-all, and how changing your timing can make your gauge read cooler without actually reducing the heat stress on your engine components. You will hear how we use EGT as a load monitor when towing, from spotting a dragging brake or boost leak to adjusting gears to keep the motor happy on a long pull. We talk about how turbo sizing and your truck’s RPM range are directly tied to exhaust temps, and why a bigger turbo can sometimes make EGT higher if it is not matched to your operating range. We also explain how compound turbo setups completely change the towing game by widening the RPM range where the engine runs cool and efficiently under heavy load. From cross-country hauling stories to trackside failures, we cover lessons learned the hard way such as melting turbine wheels at only 1800°F in high-boost race applications or watching EGT drop as the big charger lights under a heavy tow load. We break down the basics of air to fuel ratio for diesel and why more fuel usually means more heat until you go rich enough that it actually starts cooling things down. We also share how compounds, intercooling, and water or nitrous injection can be used to control heat in both towing and racing. Whether you are hauling a camper through mountain passes, tuning your tow rig for better fuel economy, or pushing a drag truck to the limit, this episode will help you read your EGT gauge with confidence and make smarter decisions for performance and reliability. We cover why one truck can live at 1400°F all day while another melts expensive parts at lower temps and how to spot the difference. If you have ever wondered when high EGT is a real threat and when it is just a number, you will get the answers here backed by years of hands-on diesel performance experience at Power Driven Diesel.