I would think about changing that fuel filter also. I have had the same symptoms which were corrected by doing that. Fuel pressure gauge could help diagnose that also ( I don't have one yet, so can't confirm that).
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98. 5 24v 3500 2wd 3. 54 lsd pyro & boost in A pillar DD1's E-brake by Jacob U. S. Gear over/direct O'Reilly Air Horns 105 gal aux tank 35' Prowler 5th wheel with three slides Firestone air helper springs
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98. 5 24v 3500 2wd 3. 54 lsd pyro & boost in A pillar DD1's E-brake by Jacob U. S. Gear over/direct O'Reilly Air Horns 105 gal aux tank 35' Prowler 5th wheel with three slides Firestone air helper springs