Hey Keirz I have a Greddy catch tank in special joz colours waiting to be fitted. I've had it for a few weeks... It doesnt seem a good idea to connect it to the inlet mani as its not normally done even on turbo. You will find some info if you search tgtt to see how their catch tanks are setup, not much but an idea at least. Only connection you need on 4efe is the rocker cover breather pipe to the catch tank. The extra pipe if you do get one with two pipe inlets will be either blanked off or a loose pipe running off it. There will be hardly any pressure build up either. Also there is hardly any oil excrement from the rocker breather pipe itself, so basically what Im saying is that its just cosmetic for us on N/A and will only bling your engine and pretty much better than those wee breather filters. The only real use is just to connect the breather pipe from the rocker to something when you remove the usual vacuum hose which is on the old intake pipe. Also about your message u sent me dude, just put back the fuel rail the way you found it afterwards, wax on wax off, if you see and smell petrol, you will need to tweek it back in so its sitting exactly right. You will find you will have to move the rail out of the way anyway for access, you might as well learn something new. You should be fine tho... Another Joz exclusive... Joz