So i was getting mad earlier that i couldnt find any info on there plenum spacer and the rev up engine, so i called skunk2. After we talked for awhile about the spacer, he informed me that in the next few months they are releasing camber kits for our cars and a Dual exhaust. He said they will be putting dynos for there vq35 products out soon. He said there spacer added 12hp to the wheels on a 2006 g35. Well thats the info i found out today just lettin u guys know about it.