Just a thought here, but isn't "hot air" what the engine is actually getting? You could be over richening it up a bit. But the computer also basis it off of the TPS, and the MAP sensors, as well as the O2 sensors, so what ever effect you might have had will be re-compensated by the ecm reading the other sensors....
Like I said, just a thought. Can you tell me if you noticed a huge difference in power or did your gas mileage change?