STAGE 1 PERFORMANCE UPGRADE TO SUIT ALFA ROMEO 159 939 939A3 TURBO DIESEL 2.4L I5This Mace ETC and K&N's air filter have been put together to meet the performance upgrade requirements of Alfa Romeo 159 939A3 I4 engine. 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 overall
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