I'm looking at pulling my plastic bumper off and replace it with a nice steel one like a Shrockworks. Being the wacko engineer I am I have to wonder how the modification effects the air bag operation. I'm assuming that the air bag sensor is mounted near the stock bumper and that the aftermarket bumpers retain the sensor.

Anyone want to hazard a guess on the changes to the air bag system? I'd hate to be in a terrible accident and have my insurance company point to my steel bumper for causing greater medical bills.