manifold - gains?

  1. #1
    what sort of gains should be expected from a 4-2-1 manifold?..
  2. #2
    better top end
  3. #3
    is it 4-1 for acceleration
  4. #4
    yeah

    they will both see results in acceleration
  5. #5
    how hard is it to fit a new manifold?
  6. #6
    mine was easy to do

    i have a gmc 1
  7. #7
    its actually the other way round, 4-1 is for power ie top end, and 4-2-1 is for torque ie acceleration, hence why the vts employed the 4-2-1 to give it better low down grunt as they arnt great below a certain rpm
  8. #8
    ooops my bad