Petrol tank breathing / charcoal canister plumbing

[thebe]

Hello
 
My ecr33 has had the charcoal canister removed and all the plumbing blocked off. So petrol tank doesnt seem to breathe at all and makes a loud hissing noise when opening the filler cap, which I dont think is good.
 
I refitted the canister and fitted the bottom hose (Leads to a t-piece) and one of the top ones to the curvy hose. I have a Freddy plenum so blocked of 2 at the top which I think originally went to somewhere in the plenum.
 
Would this work as a petrol tank breather and is this the correct and safe way to do it? Or did I mess it up as had no notes as to where the lines originally went
 
In my pic you can see the t-piece. Green goes to the hard line and to petrol tank (i think?), blue down from engine bay and into the bar, pink to the canister.

The top hose goes to the original hardline near the can
 
Thanks for any help!
 
 
 

[sonicz]

The hissing is normal bro just means there is no fuel system leaks.  

[thebe]

So would it be better to remove the can again and block all the pipes/hoses? Lots of info online, but most are very conflicting or so old that all pics have expired.

[GT-R David]

Block all except the one from petrol tank.

[Dose Pipe Sutututu]

I used a check valve on the bretaher line which opens uo about 1 to 2 psi. This stops normal air getting into the tank upsetting the E85 and also reduces the horrible fuel smell on a hot day.