I've searched the threads but have not seen any posts on the Lower Intake Plenum for the 350Z Anniversary and Track Edition. What is the difference? I was looking at it on Performancenissanparts.com

 

Go here and read through the long thread.

 

Thanks for the info. That's what I was looking for. Page 8 shows the Dyno result s that the gain in Torque and Hp are realized above 6200 rpm, but that is after Torque is decreased over the entire band below that. I think I'll go with a spacer.

 

Go here if you want to get a spacer, there is a group buy going on.

https://g35driver.com/forums/engine-drivetrain-forced-induction/44970-motordyne-spacer-dyno-test-results.html