Trumpet size

  1. #1
    what size straight trumpets would be needed for the correct induction length of my vts on throttle bodies?
  2. #2
    im not sure tbh mate, t/b's aren't one of my stronger points, im pretty sure they start at about 40mm and range through to about 70mm so quite a big range, best bet is to contact someone like GMC they will be able to tell you!
  3. #3
    correct size for what?

    a longer induction tract helps keep better midrange.