MK5 Golf/Rabbit/Jetta 07K cold air intake (MAF)

I liked the idea of the creator of the original model of using the MAF sensor housing for the intake. So I basically did the same design but with thicker walls and smoother airflow. I also adjusted some of the dimensions to have better tolerances.

You will need a standard pod filter with a 3-inch inner diameter, a 3-inch silicone coupler, and 3 screw clamps.

For the print orientation, I angled the tube slightly for better strength along the length of the intake (see picture).

I used ASA filament with 4 walls and 15% gyroid infill. I heard some people used PETG for intakes but since this one is close to one of the radiator hoses (which gets quite hot), I wouldn't recommend it.

To install, attach the pod filter to the MAF sensor housing, ensuring the arrow points toward the engine. Then, slide the 3D-printed tube onto the other side of the housing and connect it to the throttle body using the silicone coupler. The printed tube should be quite hard to get on the MAF housing, but not impossible. Once everything is in place, adjust the intake position, then tighten everything. Try to leave a gap between the intake and radiator tube. You might need to turn the MAF sensor housing as the cable is a bit short. 

I tested it in the summer heat for a couple of weeks now and didn't have an issue.I see the temperature of the air entering the engine is way cooler than before and I get a really satisfying noise. I feel like I may also get a bit better throttle response, but maybe it's just a placebo.

Thanks to the original creator, the hard work of trial and error was mostly done, so the project was actually pretty easy. I am not at all an expert, so feel free to improve the model and share it with us.