High flow vanes for 2003, Powermax or 2004-2007 Garrett Turbo for your 2003-2007 Ford 6.0L Powerstroke and the famous Garret Powermax. These replace stock worn-out vanes simply due to age and wear with a high flow version to increase airflow and drop EGTs of your 6.0 Powerstroke. You will notice a better operating turbo when paired with a new Billet unison ring, faster-spooling turbo and cooler EGTs from the increased airflow.