Bought a 2006 350z. It's under a power train warranty. When I bought it someone had upgraded the factory intake to a aftermarket intake. I am hearing a noise between 3-4k rpm. Dealer says it is the aftermarket exhaust. I am not 100% certain. Want to make sure before the warranty is up.. Anyone have a factory intake laying around that I can borrow. Want to bolt it up and see if the noise goes away. I will pay shipping both ways etc..

thanks!

 

A pic of the current setup