New to the forum and new owner of a 05 350z. Been reading up a lot and everyone suggests a plenum spacer for hp gains.

Now the obvious question is which one is the best and which size?

Also looking for one that won't void my strut bar and a good price.. give me options people. thanks

 

the search button will give you options...

don't get your hopes up...

 

MotorDyne 5/16" plenum spacer might be the most common. The 5/16" size allows you to still use your stock strut bar. I believe it comes with a few washers to raise the strut bar and make it fit. AAM made one too as well as few other companies. One size bigger is the 1/2" spacer. That raises the plenum more, creating slightly more hp, but you may not be able to use the stock strut bar. You have to double check on that.