Originally Posted by Zekery360
TB spacers dont work on modern engines. They are designed to swirl air to theoretically mix air/fuel more effectively. BUT, the problem here is the air is swirled before fuel is added with these, and then has to follow the intake runners, ridding it of the swirling effect before fuel hits it. All it really does is make a whistling on occassion. So, the best thing about it is you spend money and some idiot might think you are turboed. Otherwise, take it out and use it as a paperweight.
+1, couldnt have said it any better myself.