Review on Maximize Horsepower with the K&N Cold Air Intake Kit for INFINITI G35 (2003-2006) by Jathan Louis

Decent inlet kit although a tune is required despite what some may say. Without them, my g35 was idling, causing it to overheat on several occasions. If you're looking to upgrade the vq35's air intake, I would recommend the Stillen Z-Pipe, which uses the stock air intake configuration (which is actually quite complex) that you'd otherwise throw away at K&N. Also, before you make a compulsive purchase and possibly damage your car, talk to the guys on the 350/g35 forums.