Thread: Should I use a K&N air filter?
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      02-21-2012, 11:25 AM   #42
cssnms
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Quote:
Originally Posted by Snkypete View Post
I have seen cars gain 15-20whp with a change, and that was not 1-2%.
REALLY?! Please post up those independent dyno results for us all to see which filters provide a 15-20whp gain!
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