I made a custom air intake today. 3" ABS tubing and a 45degree coupler,1 Rubber coupler to connect to the throttle body, connectors for hoses and maf, and some ABS cement. Total cost was under 30$ and it sounds great. Makes the envoy sound like a dang race car. If you cant find ABS in any hardware stores i suggest calling a modular home or mobile home repair company, thats where i got mine at. Stores here dont stock it since it doesnt meet building codes in michigan. I will take pictures when i can.