Thanks guys. I might try to block the upper grill to start and see how it affects the engine temp & FE. Then try the bottom leaving the top open if the first trial goes well.
When I do the top grill block, I'm thinking of something temporary like cardboard to mount flush with the outside. The foam pipe looks nice though. If basjoos is able to get by with a thin opening in SC it should work for GA.
Thanks!
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