turbocharger air duct tube is used to connect the air filter housing and mass air flow sensor to the throttle plate or body. Over time and vibration created from the engine coupled with natural degradation, the intake boot will fail or being cracked and induces air leak, then your air intake system won't function properly and your car's performance will be compromised. It is always a good idea to replace the broken hoses and Flying Bull turbocharger air duct tube are a reliable solution for you.