STAGE 1 PERFORMANCE UPGRADE TO SUIT HOLDEN ALLOYTEC SIDI LY7 LWR LE0 LW2 LLT LFX LF1 LFW 3.0 3.6L V6This Mace ETC and K&N's air filter have been put together to meet the performance upgrade requirements of Holden vehicles fitted with the I4 engines. Mace ETC eliminates the delay that exists between the throttle pedal and the butterfly in the throttle body, re establishing throttle response and bottom end acceleration while improving low torque. There are different performance modes in this ETC that helps you to increase throttle response and improve