EFI gas tank...with or without Evaporation Emission Control

[ed1le]

I'm converting to EFI and going to order a Spectra EFI tank. However, I have 3 choices. 3 vents for Evaporation Emission Control, 2 vents or 1 vent. My stock tank has two vents with the vent valve (although it's broken so I'd need a new one). I understand this valve was filled with cotton or something similar? Did anything attach after this valve or was this it? What attached to tanks with just one vent?
https://static1.pt-content.com/images/pt/2011/10/687020GM20GAS20TANK20VENT20VALVE-1.jpg

I'm trying to avoid any gas smell, is this valve adequate and should I just stick with the original set up? Don't really feel like installing a complete EEC system. Also want to be sure the system is properly vented.

[parsonsj]

Ed,

It's your decision about using a complete EEC, but if you decide you don't want to, I sell a fuel vent that works very well with a single tank vent. Search here on the forum for "fuel vent", and you'll turn up some recent threads on the matter.

jp