2003-2007 LS TUNED ECM 4.8/5.3/6.0. DBW

Custom ECM Tune for 2003–2007 LS Engines Compatible with 4.8 / 5.3 / 6.0 LS platforms Take control of your LS swap or off-road build with a custom ECM tune designed specifically for 2003–2007 LS engines. This tune is built to improve performance, simplify your setup, and eliminate unnecessary factory limitations. Features include: Precise timing adjustments Optimized fueling tables Increased rev limiter Modified temperature settings to allow the engine to run hotter Unnecessary sensors removed VATS / security removed This tuning is compatible with the stock wiring harness, but you will need to install a push-button start and hotwire the fuel pump for proper operation. For the easiest installation and cleanest setup, pair this tune with a simplified harness made specifically for 2003–2007 LS engines. Important: This tune is intended for off-road use only. Green/blue Ecm connectors