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

Made some Mods and car wont start

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Old 07-06-2011, 06:53 PM
  #11  
Soldier GT
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Needs to be professionally tuned.
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Old 07-06-2011, 09:27 PM
  #12  
04orngegt
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ok thanks for the input.
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Old 07-07-2011, 01:02 AM
  #13  
S197_GTvert
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needs a tune and check for vacuum leaks thats about it
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Old 07-07-2011, 05:16 AM
  #14  
uberstang1
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Needs a dyno tune, regardless whenver FI is applied to these cars it needs to be tuned on the dyno by a reputable tuner, PERIOD. The kit chips are a limp more or less.
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Old 07-07-2011, 08:54 AM
  #15  
amoosenamedhank
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Originally Posted by 04orngegt
pro m 95mm calibrated to 39lb injectors
MAFs calibrated for injectors are a thing of the past. You pick your MAF size, then do a MAF calibration to dial in your fuel trims (among other things) and then pick your injector size in your tune.

The EEC is monitoring the incoming air incorrectly on top of dispersing fuel at in incorrect rate. This is why your car isn't running.
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Old 07-08-2011, 02:10 PM
  #16  
04orngegt
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Thanks to everyone who responded... I went back and checked my work, I found i had maf in backwards. Turned it around and it fired right up. Car sounds good just need to install intercooler and get her tuned.
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