Quote:
Originally Posted by Blackbirdws6
Install scoop where trap door would go!
The above is partially serious but you really need to get a wind speed meter to test different spots within the interior to see where the "high pressure" zones are. Otherwise you are punching a hole somewhere and it may not be in the right spot. I can likely borrow one from work if you want to do some half-ass engineering sometime. I'd think the rear deck before you get into the rear hatch/trunk area would like be a good spot. A scoop or two installed there with an exit in the bottom of the trunk would provide a reasonable path for air while avoiding issues of bringing exhaust fumes into the cabin. If you are very concerned, install a flap with a spring at the exit. When sitting still, exit is closed, at speed with some air flow/pressure, it's open. You'd have to figure out the right spring tension of course.
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The trunk floor pan is something I have given thought too, but again worry about drafting fumes. If ass of car is like boats, running a genset on back deck of boat even underway will kill owners.
And Chris, its not getting air into the cabin, its getting air out of the cabin.