SoCal Diesel DSP5LLY DSP5 Switch | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

2004.5-2005 GM 6.6L Duramax SoCal Diesel DSP5 Switch Features: - Customized ECM operating system - Lets you to switch on the fly between five user programmable tunes - Creates five versions of the main operating maps that control engine performance The 2004.5-2005 GM 6.6L Duramax SoCal Diesel DSP5 Switch Allows for Switching Between 5 Customizable Tunes Picking the right tuning products for your 2004.5-2005 GM 6.6L Duramax can a tricky process with all of the great products out there, but there are none that offer the same performance gains and adjustability than the 2004.5-2005 GM 6.6L Duramax SoCal Diesel DSP5 Switch. Its an easy to install ECM operating system that gives you on-the-fly adjustability between five user programmable tunes. You can customize five different versions of the main operating maps that control your engine's performance and switch between them seamlessly. Unlock new levels of power and performance with this premium tuning upgrade. Fitment: 2004.5-2005 GM 6.6L Duramax 2500HD / 3500HD