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Old 07-04-2014, 10:28 AM   #16 (permalink)
2000mc
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I'd still be in the camp of people thinking the air dam likely isn't hurting, more likely tank to tank differences.
I would definitely be closing up that gap myself, and of course keep a close eye on your temps when you do it.
I think that opening would at least partially neuter the gains of the air dam, by causing some additional air to flow through that opening
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