Is a Cone Air Filter a More Efficient Shape?
The cone air filter for your car is better than a stock paper filter. You will be able to order cone filters from K&N, as they will pull more air into the engine to be filtered faster. A cone filter will also be able to filter greater amounts of air, and it requires much lesser cleaning than ordinary filters. The advantage that happens here is that since more air is being drawn into your car engine, you do get more power. But when you get more power, you lose on gas mileage. Generally, if you want better power, you can shift to a cone air filter, but they are expensive and you have to pay more per month for your gas.
For more info, see 3 Signs that mean Your Car's Air Filter Needs to be Replaced