I recently found out that you can buy K & N Drop in Filters & Post MAF Tubes and the gains will be +15-16HP (dyno'd)- Not only that but the drop ins are about $100 bucks + tubes $127.00= $227 for a cold air intake- not hot like the typhoons
Amazon.com: 09-11 Nissan 370Z 3.7L VQ37VHR HPS Silicone Post MAF Air Intake Hose Blue: Automotive
K&N Drop-in Air Filter for Nissan 350z/370z and Infiniti G37/G25
I think i am going to jump on this soon. I really wanted some cool looking Intakes, but these really wont look all that bad