Return conversion question.
#7
Admin
iTrader: (22)
You only have to do this if you are running a larger pump as a primary. I have two 450's and granted only one runs at idle but it was enough that the venturi couldn't pass enough fuel and causes my idle pressure to no be able to drop low enough. With it opened up I can turn idle pressure down to regulator min. If you are running a 255lph pump or similar you will not need to do this.