[19bonestock88]

Do you want your trans to fail? Don’t block it’s cooler... the lawn edging air dam is a pretty effective mod, and side skirts are also fairly effective... look also into making wheel spats and removing a roof rack if you have one...

Driving style makes more of a difference than anything else, as high as my average mpg is if I use the freeway and go 75mph, I’d only average 36mpg or so...