racroom
06-23-2008, 05:22 PM
My system is a hilborn injection system. How important is running a high speed by-pass valve?
JimmySmith
06-23-2008, 06:01 PM
I have one on mine. Later J. Smith 4621 racing
zipper06
06-25-2008, 10:52 AM
It will definately run better on top end with a highspeed leanout, due the nature of the mechanical pump putting out more pressure as the rpm increases, not just my opinion but hilborns also.
Zip.