Just curious if anyone has run a warm air intake. Seeing as I have massive drops in instant mpg even fully warmed up during colder weather. Curious if having intake additional tubing run toward manifold to pull heat from there to bump temps would work. 15+ mpg swing in instant mpg on same route holding same speed isn't due to denser air creating higher drag values. I feel are cars run best between 60° and 80°. Curious if anyone has tried this and to what end result?