Well if you've removed 'em you're definitely not a tree hugger! lol It's a great question, what exactly do these things do? It was to my understanding, and I may be wrong on this, after talking to someone who eats, sleep and breathes small engines, that when your timing is retarded by the mandatory EPA 2 degrees, your actually putting more fuel vapors in the air. This could correct that release of vapors??
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