you will most likely HURT performance without the sensors....they are there so your car knows how much fuel to inject with the air. If it doesn't know how much air is comming in, it can't adjust your fuel properly.

 

Oh ok ..Im a COMPLETE newbie to anthing relating to airflow or airflow sensors but that totally cleared things up for me....i guess that explains the insane gas-eating when I was running just a cone filter at the end of my rubber tubing WITHOUT the sensor in there eek!