FIC 6 On OBD1 / MAP Clamp | AEM
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Beau M
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FIC 6 On OBD1 / MAP Clamp

Hello all

I've been doing a ton of reading on this, but I could use some help.  I am trying to put an FIC 6 on a JDM Aristo 2JZGTE OBD1 engine.  Here on these forums it says that you CAN use the FIC 6 (which I already have) on an OBD1 car.  You just wire in the MAP sensor to the MAF inputs on the FIC, and it doesn't know any better right?  Then just don't use the MAP table as it's not hooked up to anything.

Now, the factory ECU has a boost cut at around 11psi, or 4.3 volts on the MAP sensor.  They sell boost cut defenders that clamp the MAP signal, BUT that's the only way the engine sees load, and I want to use the FIC to do this.

In the main setup screen of the AEM software, you can set the MAF clamp voltage.  Because this will actually be my MAP signal, if I set that to 4.3, what does this do?  If I left the MAF(my MAP) map all zeroes, would the factory ECU behave 100% stock until the AEM saw 4.3V, at which point that would be clamped?

Most importantly, does the FIC continue to see MAP voltages higher than 4.3, while still clamping the ECU?  If so, that would allow me to use the FIC to tune ABOVE the clamp voltage, which is exactly what I need.  

I know the FIC was designed to add forced induction to NA cars, but I think it can be used for my appliation too.  At least I hope so.

Any input or help is greatly appreciated.

Thanks!

-Beau

 

Siddy1200
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Yes the FIC continues to see

Yes the FIC continues to see higher boost pressure even when clamping the voltage sent to the ecu. The FIC has its own inbuild MAP designed to do this.

 

I guess you can intercept the stock MAP with one of the Analog inputs and clamp it at 4.3V. But not sure.

jwmelvin
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Joined: 02/17/2015 - 08:14
If you connect your MAP

If you connect your MAP sensor to the MAF input, the FIC will be able to clamp the signal going to your ECU.

 
If you connect a vacuum line to the FIC, you will be able to use the internal MAP as the load variable in the fuel/timing tables. Alternatively, you may use the MAF input, which would be your factory MAP sensor. You would just have to make sure that your factory MAP sensor goes to sufficiently high pressures. It seems better to use the FIC's MAP sensor, and simply limit the factory MAP signal that goes to the ECU.
 
If you set your MAF map (actually MAP for you) to zeros, make sure it is in percent mode, not voltage mode. 
Beau M
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Joined: 03/31/2015 - 11:02
Awesome, great news and

Awesome, great news and thanks.  Just after I posted that I started thinking about the internal MAP sensor and what role it played, makes sense now.   Pics of the car in case you are interested:

 

[img]http://i.imgur.com/tcdBFTW.jpg?1[/img]

 

[img]http://i.imgur.com/X9RCAZP.jpg[/img]

xile6
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Car looks great. but it also

Car looks great. but it also reminds me of the scobby doo races lol.

lester1968
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Hi. I would like to know if,

Hi. I would like to know if, in short, the placement of an AEM FIC / 6 device in a vehicle with ECU OBD1 (Honda D16A9 Del Sol 1993) is possible. If so, where do I get an electrical diagram to install it ?. Thank you very much

 

AEM_SB
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Joined: 06/07/2014 - 14:29
If your Del Sol's wiring

If your Del Sol's wiring matches the 1993 Acura Integra, you can use one of the diagrams here: https://aemelectronics.com/?q=forum/wiring-diagrams

Honda vehicles from the 80's and 90's need a specific part number FIC, PN 30-1911, to work correctly with the cam/crank sensors in the distributor.

 

Hope that helps,

SB

lester1968
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Joined: 04/17/2018 - 14:14
Thanks for the reply. Now, I

Thanks for the reply. Now, I bought it used and I do not get where the model of it is. I only know that the serial is 1910-2013. It also says 10-9997 in a section of its label, could you help me determine which model it is? In the next few days I will be checking if the electrical installation is the same as the one you suggest.

AEM_SB
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The first part of the serial

The first part of the serial number shows the model number: 1910. That is the wrong part number to use with an 80's or 90's Honda. You need a 1911.

lester1968
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Oh oh. Throw the money? Is

Oh oh. Throw the money? Is there no chance that this team can apply? What a terrible news for my Holy God

lester1968
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Joined: 04/17/2018 - 14:14
What problems can it cause me

What problems can it cause me to use this equipment I buy? Sorry for the inconvenience please.

AEM_SB
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Joined: 06/07/2014 - 14:29
The OEM Honda ECU for 80's

The OEM Honda ECU for 80's and 90's Hondas will throw a check engine light related to the crank / cam signal voltage if using the 1910 FIC, and the engine will run in limp mode. The only solution is to use the proper unit, the 1911 FIC. To avoid confusion and problems in the future, I suggest working with an experienced shop who is more familiar with your vehicle and what modifications will help meet your goals and your budget.

lester1968
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ok thanks a lot.

ok thanks a lot.

Guy integra
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Joined: 05/18/2019 - 08:30
Hi i have the aem fic 6 30

Hi i have the aem fic 6 30-1911, i wired it up the same as the obd1 integra diagram and it is throwing ckp error code ob2 reference po336 when i rev it past 2000rpm,. Would a resistor work ive read that a 2.2k ohm 0.5w resistor might work any help would be appreciated.
Its a 1996 automatic honda integra b18b2 (same as acura integra) weird thing is its obd1 ecu plug and has obd2 distributor and it says its an obd2 code.

aletorres
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Joined: 08/03/2019 - 21:18
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