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It's been mentioned on this site countless times that the engine is really just an air pump. I'm no scientist, but I have to belive that the less restriction of the air going in, the less the pump has to pull. That being said, keeping the tach at 2000 or less doesn't require too much air. My conclusion a high flo air filter may help minimally, unless you keep putting your foot into it because you like how it sounds.
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