[quote author=Codders link=topic=39036.msg1#msg1 date=1378161958]
Well I swapped my VF28 to VF48 and it made much more power.
Where the VF28 was getting out of puff in higher range of RPMs, the VF48 is still pushing hard.
Slower spool on VF48 but better torque and midrange.
[/quote]
Very similar size when compared and flow rate on them though ..... 320-330 seems to be the figure most of the vf range