I'll be interested to see how this works out for you, grandboost. I've got a bit of exhaust/fuel smell as well, but my canister is all but disconnected. I'm thinking bringing this into the mix may help alleviate some of the stank.
1995 Blue YJ i-4 AX-5 33" Cepek Crushers on 2.5" Rancho lift - SOLD October 2010
1996 White ZJ i-6 auto bone stock
1987 Maroon YJ i-6 Auto (1.5" body lift. OME 2 1/2" lift. Rancho RS5000 shocks. Rancho steering stabilizer. A-Z Fabrication rock slides. More upgrades coming soon - LOL)