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WAI oh WAI...
If you mount a K&N filter in such a way that it draws warm air from the engine bay while the original filter draws cold air, then the K&N filter works as a proper WAI.
The way K&N filters are constructed makes it higly likely that this happens.
We know the positive effect a WAI can have, especially in winter.
8% mpg gain does not sound unreasonable.
This is no miracle feat of K&N, just the effect of a WAI.
(wish this had jumped to mind earlier, things might have turned out differently.)
EDIT What the... I thought this was another thread! Sorry for breaking word. I'll dive under again.
The post fits the topic, I'll leave it as is.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
  lifetime FE over 0.2 Gmeter or 0.13 Mmile.
For confirmation go to people just like you.
For education go to people unlike yourself.
Last edited by RedDevil; 03-17-2014 at 08:17 AM..
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