I have the Z-Tube with my stock couplers but mine are old/ripped so right now they are duct taped. Trying to get new couplers so it doesn't look so ghettofabulous.InfinM3506 wrote:What are you trying to do? just keep stock intake? or you upgrading it at all? I did a silicone z-tube and used the stock coupler by the airbox to connect to my JWT Pop Charger.