Using these K - Tuned throttle body inlets is a breeze. First, locate the 4 bolts that hold the standard inlet in place. Remove these bolts carefully. Then, take your chosen new inlet, whether it's a V - Band or Vanjen fitting in 3.5' or 4'. Place it in the position where the old inlet was and secure it with the bolts. Remember to reuse the o - ring that came with your throttle body. When it comes to maintenance, keep the inlets clean. Regularly check the bolts for tightness to ensure a proper fit. Avoid using harsh chemicals on the inlets as it may damage the material. If you notice any signs of wear or leakage, replace the parts as soon as possible.