[wildfire8]

I installed a belly pan on my Hyundai Elantra last week out of coroplast. Ever since I did my mpg numbers have gone down. It feels like I have a lot more drag with it on. I do not have a front grill or bumper block. I am wondering if the air that goes into the engine bay gets stuck in there with now where to escape because the underside of the engine bay is completely covered? and the only place for it to go is back out the front of the car.

Any one have this problem before?

I am going to try a bumper block with some left over coroplast.