My DIY CAI
Pieced together a kit to get rid of the hideous stock intake plumbing. Haven't decided whether to extend the piping down inside the bumper or not. Gonna see what the intake temps look like with the aluminum in there instead of plastic.
4" 45* aluminum bend, 4" 90* elbow, 4" coupler to stock MAF. I used a 1" piece of 3.5" silicone hose around the MAF end and the 4" coupler fit perfectly..