The Racer X Fabrication cold air intake box for the 2012+ Chevy Sonic 1.4L is designed to improve performance through the full RPM range. We started with aluminum sheet that is CNC cut, and bent to form the air box. The panels are then TIG welded along with our 4.5” velocity stack that is specifically designed for the Sonic 1.4L engine. The velocity stack features a full bell radius, and tapers down to the OEM MAF diameter for the correct airflow. The velocity stack and taper increase airmass which increases power. The completed air box assembly puts down on average 10 WHP and 12 ft/lbs of torque (peak whp is: 12 whp, peak torque is: 15 ft/lbs). The mounting bracket for the air box uses the exact same OEM mounting points, and we CNC machine the mounting tabs to the same OEM dimensions which allows for simple installation. Finally the air box is finished with our Racer X logo.