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What goes on inside the infamous FMU???

Old 04-20-2003, 12:35 PM
  #1  
1.0 BAR
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Default What goes on inside the infamous FMU???

Hey I wanted to know what the FMU does exactly....I know it richens things up but how? I mean how does it trick the ECU into giving up more fuel? Does it alter the map voltage, coolant temp sensor or what? does it have the same drawback as the AFC hack where it advances timing too much in the lower revs? thanks!
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Old 04-20-2003, 02:54 PM
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Default Re:What goes on inside the infamous FMU???

I thought it was completely mechanical?
Just stored fuel and delivered more flow into the injectors?
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Old 04-21-2003, 04:45 PM
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Default Re:What goes on inside the infamous FMU???

I always thought that that was a Rising Rate Regulator....I know what that does. I mean the Black and blue bowes people use from the Greddy kits thanks!
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