Well that sounds awesome!
Got part of coroplast in today so that radiator air dam is still there instead of covered. I only had enough coroplast to extend a bit past the ends of the radiator. There is a nice little gap under the radiator above the air dam to slide coroplast between.
Should help quite a bit with fuel mileage as its not a negative aero mod now.
I'll know pretty quickly if its better as the tps has been reading 23-24 where as it used to be 21-23.
Going to look for some more coroplast to add some more.
Also going to have to try finding some yard trim for an air dam!
And...haha...going to look for some lexan to make a better grill block. Coroplast is too thick for the way the bumper's lip is.