Diesel Performance Blog

Search "performance diesel products" and you get a list of parts with no explanation of which ones actually change how your truck drives. On a Cummins, most of the real gain comes from one place: airf … Continue reading: Performance Diesel Parts for Cummins: How to Choose the Right Upgrade

What the VGT Actuator Does on the X15 The variable geometry turbocharger on the Cummins X15 and ISX15 uses a set of moveable vanes inside the turbine housing to control exhaust flow across the turbine … Continue reading: X15 Turbo (VGT) Actuator Codes - What They Mean and When to Replace

When the turbo on your Cummins ISX15 or X15 needs attention, you have more options than simply buying the same unit back. Diesel Power Source® has engineered a full range of upgrades for the ISX15 … Continue reading: ISX15 / X15 Cummins Turbo Upgrades — The Complete Guide to Every Option

High-Flow Exhaust Manifold for the Cummins ISX15 and X15: EGR and Non-EGR Direct Replacement If your Cummins ISX15 or X15 is leaking at the manifold joints, or running hotter than it should, the facto … Continue reading: Cummins ISX15 / X15 High-Flow Exhaust Manifold | EGR & Non-EGR

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?