Join Date: Oct 2012
Location: Mt. Carmel
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IMO when i had my 7.3 i had a dp tuner and it actually ran better on the 120 setting vs 140, but i also had stock hpop and stock injectors. And no you do not need upgraded injectors or hpop to run the higher hp settings, you would just be getting the full benefit out of the 140 setting if you did.
Also suggest getting a set of guages, egt,boost and trans.
egt being most important boost just for fun and trans if ur towing heavy....
And do you kno what year truck ur motor came out of ?, 99-late 2000 all had forged rods but besides that point,yes you will be fine weather its forged or pmrs, pmrs are good for at least 450-500 hp but like i said above you will not see the full benefit of the 140hp setting because of the fact that ur still on stock injectors and hpop.