If You Bought It Purely For Horsepower...
You probably just wasted $60.00. But if you coated it properly with the K&N oil, and are willing to clean and recoat it as required, when you consider the superior air flow, filtration, and savings over buying paper filters (as well as the environmental aspects), you did real good.
Give it time, measure your fuel consumption, and see how it works out over time. Then report in and let us know what you think.
"We drive into the future using only our rearview mirror."
- Marshall McLuhan -
Northern California Wine Country...
"Turbos whistle, grapes wine..."