At just over 120,000 miles my new 04 Nissan Sentra S 1.8L car runs well, no problems. And I drive very little these days. But to see if the auto tranny can be a bit more responsive I've ordered an Airaid Dry-flow engine air intake filter. Everything on the Sentra is original stock. Is it recommended to do anything to the car when I install this new filter? Are the plug gaps and timing the same as when using an OEM paper air filter (I'm going to replace the spark plugs, too; the ones in now are probably the originals)? Shall I clean the MAF sensor, or can I leave it alone since the car runs well? Is the dry-flow filter better for the car than the OE Fram paper one it has now, or do they give about the same protection?