Re: Air Pump?
I assume you're talking about the smog pump, and no, it won't make your motor run rich, there's no 02 sensor to make it think so. And if your truck is burning the fuel in the exhaust manifold, then you should call someone and get a patent. All the smog/air pump does is dilute the exhaust coming out. When you get an exhaust check they measure HC's (hydrocarbons) in parts per million (PPM). It's just like adding more water to Kool-Aid. It's still Kool-Aid, its just not as strong. I say what the heck, yank it off. It's just one less thing to worry about later on. The shorter belt is probably cheaper, anyway. Just make sure that when you plug up the exhaust maifold that whatever you use to plug it isn't reaching into the manifold and obstructing the airflow.