Hi, I have a 91' Tri-axle with the Em7 300 in it. I am wanting to know how to turn the pump up, we took the plate off the back of the pump (closest to firewall) and there are two screws. the bottom one (longer one) we broke the nut loose and turned it out towards firewall one and half turns. The truck will put out some smoke now but the rpm will not gain any faster than it did before, just parked and stomping on throttle. I was wondering if the top screw has anything to do with bringing on the rpm's faster or what will do it. I'd like to get as much out of it as possible without having to put bigger injectors in it. Any help would be great. Thank you
