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apexi neo or aem f/ic?

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  #41  
Old 04-30-2009, 12:51 AM
Join Date: Feb 2007
Location: Flint, MI
Posts: 548
OK I did some research and I think I see how they did this.

MAP signal controls timing as well as fuel for our cars. The F/IC allows you to remap the MAP signal based on load / RPM.

By pulling MAP voltage, you effectively pull fuel AND add timing (via the stock maps). You can add the injector pulsewidth back in directly using the main fuel map, and your net result is advanced timing. You'd have to use some sort of OBD 2 monitor / logger to ensure you aren't adding too much / not enough timing, however, as the FIC can't datalog ignition timing.

So, by ghetto-rigging it, you CAN run advanced timing with the F/IC.

Hm... I might try implementing a lean cruise with this... Advanced timing + lean mixtures at cruise loads can make for some ridiculous gas mileage.
 
  #42  
Old 05-01-2009, 05:38 PM
im the fit's Avatar
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can someone please explain what the load does in map load with the F/ic
 
  #43  
Old 05-01-2009, 11:29 PM
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and do I need to use the on board map on the fic foe N/A?
 
  #44  
Old 05-01-2009, 11:51 PM
Join Date: Feb 2007
Location: Flint, MI
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Manifold pressure is a measurement of engine load. All fuel maps for speed density cars are plotted against RPM and Load (MAP).

And yes, you need the on board MAP sensor. The FIC uses it for the load calculation.
 
  #45  
Old 05-01-2009, 11:55 PM
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alright one last question before I install on saturday what do I connect that hose to
 
  #46  
Old 05-01-2009, 11:58 PM
Join Date: Feb 2007
Location: Flint, MI
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The hose is vacuum line. It's for the MAP sensor nipple on the front of the FIC. It goes to any vacuum source off the intake manifold.
 
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