so i was putting on my tb from a grand-am and i noticed that i have an extra hose line/ vaccum line with no where to connect it to. when my truck is on i tryed plugging it and un plugging it with a plug and there was no diff in how the truck ran. the hose goes into a T and then into the drivers fender. currently i have it disconnected and un plugged and my truck seems to be running very well and faster, YES faster. not fast, lol but faster. plus it sounds a little deeper too. does anyone know what this is for?