A very handy web site to answer all the questions about tweaking with your fuel pump , a handy hint a bottle of tipex will be handy to mark anything you adjust to allow you to reset the item if you need be , i adjusted every thing as per the link and well the disco flew but gave a plumb of smoke on full thottle like the red arrows , so turned a few things back again , you can get so its claimed 260bhp with these tweaks , the link is
http://dodgeram.org/tech/dsl/more_power/Power_ve.htm , have fun boys and girls