I have a "95 Maxima and am thinking about using a K&N low-restriction drop-in air filter. Is it worth the extra cost and will it help my gas mileage and performance?

 

Yes, but only slightly. The main advantage of the K&N panel filter is the ability to reuse the filter instead of buying a new one.

If you want any real gains, you have to switch to a cone style (JWT/Stillen) filter or a CAI(cold air intake) type.

Do a search on both. It will yield much information.

 

 

There may or may not be any performance gains.

But, I feel I've definitely gotten my money's worth. I've had mine for over 100k miles. I would have bought several paper filters by now, but I've saved money by just cleaning the K&N.

 

Turbo Magazine dynoed a 4hp gain with the K&N panel filter. I definitely noticed better throttle response when I had mine in, compared to stock, so it must flow a good bit more air.