My engine still using normal air filter box, if i can avoid hot air goes into combustion chamber I can gain extra power from it. CAI is not use to eliminate hot air, but is use supply colder air to air filter.
The theory is, colder air contain more oxygen. With more oxygen, engine can get near to perfect combustion thus can produce more power.
I do not show how to remove the bumper in this thread.
First thing is remove the white part. Need to remove 2 screw and loosen 1 screw as per picture below.
Then make a mark as I need to make the hole larger to fit the CAI hose. I use stone bit and grind it until large enough to fit the hose.
I just drill the hole just fit enough the CAI hose. So, to fit the hose in, I turn around the hose like fastening a screw.
My little assistance doing his job.
How it look like after fit back the bumper
