Cusco oil catch can

[Head Chef]

I am planning to order a Cusco oil catch can but am not sure whether to get the 15mm or 9mm hose for my S2000 AP1. Exviper can you help? Thanks

[repiv]

The PCV hose is 15mm OD, but more importantly is that the ID be about 7.5mm. Also, get the firm thickwalled kind, NOT the translucent kind with the braiding on the inside. Those will collapse under vacuum and heat.

[Head Chef]

Thanks so much XViper! As always your right there to help out!