4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

5.4l swap done, but new motor wont start? video

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Old 10-17-2011, 08:45 AM
  #31  
amoosenamedhank
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Don't change your 42lbs injectors in... you definitely won't run for **** then. The ECU needs to be calibrated for the larger injector before swapping.

My car started and ran fine on a 4.6 N/A tune with 5.4 supercharged. The only thing we did was re calibrate for the MAF and injectors.
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Old 10-17-2011, 08:45 PM
  #32  
95SHO
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We know it's getting fuel but have you checked to see what the fuel pressure is?
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Old 10-26-2011, 04:55 PM
  #33  
03FASTGT
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Any updates?
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