Still a work in progress! Anyways, wasn't having much luck with the coroplast one. So onto making a better, more proper angled one as well.
Started out by Hacking the Exhaust. (possibly voiding my Warranty)
I have been planning on doing this for a while though.
*Please, Do this at your own Judgment/Risk*
Doing this opened up a simpler route to mounting and managing an Exit Vent for air and exhaust...
You can see, I had built a sorta box-frame to mount everything too. With the intent of lowering/closer to the ground, as well as decreasing its angle.
That all done, Paneling next. Used Recycled PVC Roofing 2'x8' sheet material.
^^^Not quite sure what to do about the overhang just yet. Leave rolled up the side like i have, or bend it downward creating a channel?!
I still have the area between the wheels to smooth up, for continued attached flow.
All in all, it doesnt look too bad, the green sticks out, and the wood obviously doesnt belong there, will paint soon to look less conspicuous...
It does work, How well, I'm not entirely sure, Just know when coasting, is a bit longer, and i gain speed faster going down the same hills in my area. I'm pretty pleased on this.
Note that i have stated I hadn't noticed any changes in a previous post of mine... I can actually say, my gf still needs a huge amount of time to learn efficient, consistant driving... She is main driver of it, but when i get into it, i raise the MPG back up to ~40mpg...
I stole my car back, and did my own (just me) controlled test. Including that, Max sidewall psi in tires, conservative grill block, and the new Diffuser. Over the course of ~10gallons this last week was able to achieve 46.5mpg (about 25% city and Max of 65mph on hiwy)