I run a half windshield with a gutted cat and I get the raw fuel smell in the cab, sometimes smells like old fuel. Of course with the cat on it was rotten eggs in the cab but would go away at higher rpm. Now it's a strong old un-burnt smell that is always there, and I have new fuel 3 days old and it smells bad. Oh well.
added the extra piece thx man !Under the hood find the fuel tank breather, which is white plastic, get some rubber or vinyl hose and add a pice to the end and run it down the right side wheel area. Problem solved. You notice the smell because the windshield, nothing to do with the cat delete. Raw fuel will drip out of that breather and you smell it because of the windshield. Mine and my friends both did it, they put the breather up high, but it sends the vapors into the cab.