Installing the JLT CAI is a straightforward effort. As a one-piece unit, the 127mm intake’s interior is much smoother and does not have any of the increasing/decreasing diameter transitions created by silicone couplers, which upset the airflow. JLT has also increased the size of the tube’s opening (to 5 inches), as well the heat shield. Of course, increasing air volume so drastically requires tuning. For the dyno test, Brent used the same timing tables from the custom tune, then applied a MAF curve that he created for the JLT Big Air. With only 10 psi of boost (Roush 88mm pulley), the gains were crazy!