Wysocki researched the aerodynamics of a long-distance bus. [...] He tested a deflector on the rear, used to scoop fresh air down onto the rear window to keep it clean, finding it increased drag by about 3%.
Once the rear deflector is removed, you have two very nice mounting supports for a Kammback. I personally would do an A-B-C test, where:
A - OEM deflector,
B - No deflector,
C - Short Kammback.
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is where you're going, not how fast.
"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell
skibum is correct if I recall correctly; remove the fin and you will draw all sorts of exhaust gas into the back window. No biggie if you're aware of it though.
I'm pretty sure removing it will help your mpgs. I like the debate on this though!!!!
Once the rear deflector is removed, you have two very nice mounting supports for a Kammback. I personally would do an A-B-C test, where:
A - OEM deflector,
B - No deflector,
C - Short Kammback.
That's set up to direct air straight down, so of course it's going to increase drag. But what if you angled it the way you'd angle a kammback?
Hi, first time here, regarding this deflector, I need to find the manufacturer of it.
I've got the same on my 4R, happened that I've lost three of the four screws in rough roads.
Hope to find them as spare parts.
Can you help me?.Thanks
Hi there, unfortunately while going out of my garage, one of the two bases where the deflector was mounted, got broken.
ANY CLUE of manufacturer Co. name???
Thanks.
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