I am trying out painting the plastic parts to see how is best, i am practicing on the black U pipe from the resonator. I bought Dupli - Color Aluminum (it matches the aem color perfectly) I did 3 coats and it kinda looks ok. I did learn one thing DON'T FORGET TO SAND!! some spots the paint kinda rolled off and didn't stick. tommarrow i will post pics. I hope that really coating your intake pipes really will help reduce the temp of inside air.