Originally Posted by F35-JSF
Does the drop in mileage come from the active grill shutters no longer being able to close off the front lowering the areodynamics of the car?
I've thought about that. I have the bottom portion of both triangle grills opened up as well. But, I did pull a hand calculated 38mpg tank last month while on a road trip. My Fuelly still has me above 32mpg for 13K+ miles, so it's still the best mpg vehicle I've ever owned.
I might close off the triangles again. The newmission tube will still have access to non-engine compartment air, it just won't be impact air. I'll run a test like that over the winter, but winter gas might skew my results.