Anything you can do to make your bumper as vertical as possible and push as much air as possible around the sides, as opposed to over the top or under the car will help you out.
I like this if you block out the huge hole in the front as much as possible making the cooling hole as low and close to the center as possible.
The only real air inlet on this car is the one below "Camry" and half of it is taped shut when it's go time.
