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Old 10-20-2012, 10:40 PM   #4
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Join Date: Apr 2012
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I found that the easiest way to improve throttle response was to install a K&N drop-in filter. Any hesitation that I had immediately disappeared, and I had a couple of friends try it in their Foci when they had similar complaints. You won't have any hp increase, but the throttle becomes much more crisp.
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