2008 Holden SV6 Upgraded with Performance Mods 🚗💨 This 2008 Holden SV6  came in for a full set of performance upgrades to maximize power, sound, and driving enjoyment. Modifications Installed: Xforce Headers and Cats  – Boosts exhaust flow and efficiency. 2.5-inch Catback Exhaust  – Aggressive sound and improved performance. ORSSOM OTR Intake  – Optimizes airflow for sharper throttle response. Purge Solenoid  – Enhances engine efficiency and responsiveness. Custom ECU and T