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AEM FIC finally out

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Old May 30, 2007 | 10:56 AM
  #21  
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Originally Posted by elusiv,May 30 2007, 07:39 AM
...The problem I have is finding something to adjust fuel and being able to run larger injectors reliably. AEM EMS was the only thing that would do it, but it seemed too costly and overkill for boosting to 9-10psi. Also, tuning for partial throttle, cold starts, weather, etc is just too much of a headache for the extra 2-3 psi.

Do you think the FIC will suffice for vortch/CTSC users wanting to boost a bit more?
This is exactly what this product was aimed at.

It allows you to grow out of your current injector size and pull some timing without going to a standalone. I am a big fan of keeping the OEM system wherever possible. No matter how much you tune a standalone, you will never match the thousands of hours that Honda put into the factory tune. The FIC allows you to keep that drivability, cold start, idle etc... and only tune where you need to.
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Old May 30, 2007 | 11:14 AM
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Originally Posted by WLAURENT,May 29 2007, 10:51 PM
I know the eManage ULT allows you to use the wideband to set a target AF and it will fill in the cells for you. Not sure if the F/IC does the same.

Given Greddy's past performance regarding support, documentation, etc... I will likely go with the AEM.

I also like:

AEM does 21x17 mapping where the ULT only does 16x16

AEM uses both cam sensors for timing management where ULT only uses one

I do like that the ULT will do A/F target tuning - not sure if the AEM does. I also think that the ULT does slightly better logging and with a flash update will be able to monitor the knock sensor with a pending firmware update (again - not sure if the AEM will be capable of it).
I would place the AEM FIC right between the e-Manage Blue and e-Manage Ultimate. It has the most important feature of the Ultimate (direct injector control) but without all the hyper configurability.

It has logging but it is small and really only for 1 dyno pull. However, you can PC log quite alot. It does not have AFR control as it assumes the factory ECU will be in feedback and having the two of them doing battle is a bad thing. It does not sense knock, again, allowing the factory ECU to do that.

It was designed with a very narrow feature set that will do everything a guy bolting a 10-20 psi boost system on a car will need to fix the fuel and spark issues caused by the boost.

I have already seen street prices in the $397 range for the FIC with the universal "flying lead" harness (AEM P/N 30-1910) and there are no additional components needed. Thats less expensive than the e-Manage Blue but with the e-Manage Ultimate's injector drive functionality.
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Old May 30, 2007 | 12:21 PM
  #23  
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Will this have the same de-tuning problems that things like the VAFC have?
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Old May 30, 2007 | 12:25 PM
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What do you mean de-tuning problems?
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Old May 30, 2007 | 12:36 PM
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Originally Posted by duff0000,May 30 2007, 01:25 PM
What do you mean de-tuning problems?
He means when the OEM ECU begins to learn and undo/reverse the changes made by VAFC. This required people to reset the OEM ECU every so often and sounds like a PITA to me.

I dont believe the AEM FIC has this drawback, but a confirmation would be nice
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Old May 30, 2007 | 12:42 PM
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Where the ECU tried to correct for the increased flow of mods and go back to the stock specs. Maybe that only only NA cars, but where you have a mod on your car for a while (like intake/exhaust) and the ECU learns and compensates for it, so you end up with the same amount of power as stock
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Old May 30, 2007 | 12:44 PM
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^I'm pretty sure this issue would be present regardless of whether the car is NA/FI.
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Old May 30, 2007 | 12:45 PM
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Wow, I did not know that about VAFC's that over time the ecu fights back and changes the settings you have made via the VAFC.


A confomation would really be nice!
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Old May 30, 2007 | 01:28 PM
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Originally Posted by goldenfri,May 30 2007, 12:21 PM
Will this have the same de-tuning problems that things like the VAFC have?
Excellent question.

De-tuning has been a problem for the last 10+ years but gets worse with each successive ECU release as the ECU's become more robust.

It happens when you try to fight the ECU rather than work with it (like attempting to change the AFR in areas where the OEM ECU is in feedback mode).

The design criteria used while developing the FIC was specifically chosen to prevent detuning. we do not try to brute force the factory ECU to do something it does not want to do. We dont intercept sensor signals and double them and other hokey stuff like that. In early testing we jacked a 350Z's MAF sensor to more than double the proper value and the afr only changed 0.3 points! it detuned us instantly.

Since the FIC controls fuel by intercepting the ECU's injector outputs, it allow the ECU to see and control the engines sensors normally, with very minimal monkeying around. As long as some common sense is used while setting it up then de-tuning wont be a problem.
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Old May 30, 2007 | 02:08 PM
  #30  
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Also if it can't control AFR then how would u tune an turbocharged s2000? Wouldn't the tuner have different ratios for that setup.
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