The hands-down best performance modification for a 7.3 Powerstroke is tuning. Tuning can help unlock horsepower and torque all while increasing fuel mileage, improving towing, and help the engine run better overall.
SCT LLC
1996-2019 Powerstroke SCT X4 POWERFLASH (7015)
Part Number: 7015$578.22 CADUnit price /UnavailableSCT LLC
1996-2019 Powerstroke Livewire TS (5015P)
Part Number: 5015P$826.62 CADUnit price /UnavailableEdge Products
1999-2016 Powerstroke HT2 (16040)
Part Number: 16040$652.43 CADUnit price /UnavailableEdge Products
1995-2003 Powerstroke 7.3L - Edge Revolver 6 Position Chip (1400X)
Part Number: 14000From $559.63 CADUnit price /UnavailableBanks Power
1994-2003 Powerstroke Ignition Performance Module (66505)
Part Number: 66505$694.55 CADUnit price /UnavailableEZ-Lynk
EZ-Lynk Auto Agent 3.0 - Cloud Based Tuning & Diagnostics (No-Tune)
Part Number: 100EE00AA3$749.00 CADUnit price /UnavailableEFI Live
Universal Cummins & Duramax EFI-Live FlashScan V3
Part Number: FS3-GM-DC$1,963.08 CADUnit price /UnavailableEdge Products
2000-2001 Powerstroke Excursion Edge Revolver Kit w/ CTS3 Insight (14110-3)
Part Number: 14110-3$1,667.43 CADUnit price /UnavailableBanks Power
1999 Powerstroke Git-Kit Bundle Power System W/Single Exit Exhaust Black Tip (47511-B)
Part Number: 47511-B$1,680.55 CADUnit price /UnavailableBanks Power
1999.5 Powerstroke Stinger-Plus Power System (47536)
Part Number: 47536$3,594.55 CADUnit price /UnavailableBanks Power
1999.5 Powerstroke Stinger Bundle Power System (47531)
Part Number: 47531$3,130.55 CADUnit price /UnavailableBanks Power
1999 Powerstroke Stinger-Plus Power System w/Manual Trans (47523)
Part Number: 47523$3,116.05 CADUnit price /UnavailableBanks Power
1999 Powerstroke Stinger Bundle Power System w/Manual Trans (47518)
Part Number: 47518$2,652.05 CADUnit price /UnavailableBanks Power
1999 Powerstroke Stinger Bundle Power System w/Automatic Trans (47516)
Part Number: 47516$3,130.55 CADUnit price /UnavailableEFI Live
2001-2016 Duramax EFI-Live FlashScan V3 (FS3-GM)
Part Number: FS3-GM$1,401.80 CADUnit price /UnavailableInnovative Tuning
1999-2003 Powerstroke SCT Custom Tune Files
Part Number: 7.3L Custom Tuning-1From $113.60 CADUnit price /UnavailableEdge Products
*Discontinued* 1999-2003 Powerstroke (7.3L) Juice W/Attitude CTS2 (11500)
Part Number: 11500$1,408.27 CADUnit price /UnavailableBD Diesel
Universal BD Throttle Sensitivity Booster Switch (1057705)
Part Number: 1057705$96.95 CADUnit price /UnavailableProven Diesel
Universal Proven Diesel EZ-Lynk TCM Tuning (PD-EZ-TCM)
Part Number: PD-EZ-TCM$399.99 CADUnit price /UnavailableBanks Power
1999-2019 Powerstroke AutoMind 2 Programmer (66410)
Part Number: 66410$636.55 CADUnit price /UnavailableGDP
Universal GDP Commander Credits
Part Number: GDPCOMM3333From $67.50 CADUnit price /UnavailableAvto
Universal Avto Komander Credits
Part Number: Avto-CR-1From $69.00 CADUnit price /UnavailableBully Dog
Universal Bully Dog BDX Programmer (garage-sale-40470)
Part Number: garage-sale-40470$524.00 CADUnit price /UnavailableEdge Products
Universal Edge INSIGHT+ CTS3 MONITOR w/ Custom tune License (84140)
Part Number: 84140$869.93 CADUnit price /Unavailable