Diesel Performance Blog

If you own a 2007.5-2018 6.7 Cummins and you’re tired of the factory VGT turbo, you have two main paths to a permanent fix: a 2nd gen swap or a 3rd gen swap. Both replace the factory VGT system … Continue reading: 2nd Gen Swap vs 3rd Gen Swap: Which Cummins Conversion Is Better in 2026?

Compound Turbos for Cummins: The Complete Guide Compound turbo systems are the single biggest upgrade you can make to a Cummins diesel engine. Not because they add the most horsepower — though t … Continue reading: Compound Turbos for Cummins: The Complete Guide

If you work on ISX15 and X15 engines long enough, you start to notice a pattern: turbo problems and manifold problems rarely arrive alone. A cracked manifold raises EGTs and starves the turbo of drive … Continue reading: HE400VG Turbo and Manifold Kit for ISX15 and X15: Why Diesel Mechanics Are Replacing Both at Once

The exhaust manifold on a Cummins ISX15 or X15 is one of the most stressed components on the engine. It handles exhaust temperatures that regularly exceed 1,000°F under load, expands and contracts … Continue reading: ISX15 and X15 Exhaust Manifold: EGR vs Non-EGR — Which One Does Your Truck Need?

If you own a Cummins diesel and you’ve been looking into turbo upgrades, you’ve almost certainly run into compound turbo kits. Maybe you’ve seen them in forum threads, on YouTube ins … Continue reading: Compound Turbos for Cummins: The Complete Guide (5.9 & 6.7)