Start off with an improved air intake to let the engine breath better. Below left you can see the Air Muffler and the baffle. The air muffler (on the left) goes between the air cleaner and the throttle body. The baffle to the right of it comes off the front of the air cleaner inside the body of your Ranger above the wheel well. As you can see in the picture below right, the air muffler was replaced with a piece of stainless but you can use PVC pipe. This will allow more air flow into your motor, increase HP, and make your motor a little bit louder. Your air cleaner is in two (2) parts; air cleaner canister, and mass air flow sensor. Open your air cleaner and remove the air filter, then unbolt the can in which the filter was in, when you pull the can off, the baffle will be attached to it. Remove the baffle, and reinstall the air cleaner. This will add more air flow, HP, and sound to your Ranger.