Vargas Turbo Black Tial BOV Spring

If running a Tial BOV on your N54 instead of the TurboSmart Raceport you want to run the black spring. This will provide you with the most complete vent, and eliminate any chance for flutter/surge. \n \nThis is a 100% Genuine Tial Spring, NOT a knock off. \n \nPlease note this spring WILL keep your BOV open at idle which is not a problem in any way shape or form. If this bothers you for some reason, you can simply shim the spring until it is just closed at idle.