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SAFC BLUE WIRE MOD! Is it worth it???

Old 07-28-2005, 05:41 PM
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Default SAFC BLUE WIRE MOD! Is it worth it???

Well i was wondering if the blue wire mod is worth it at all?? I was reading up on it and some people said it was and some people said it could mess up your engine Is it worth it??


This is what i found on some sight about it. Is it true?? Or is it perfectly safe??


Blue Wire Mod
What is it? Well, after you have installed your SAFC, you will notice that some wires from the harness are unused. That is because they are there for applications of the SAFC in other cars.

One of the unused wires is blue, and the idea here, is to hook it up to the 02 Sensor. If you do that, and you go to the etc. menu and select the Sensor Check option, under #2 you will see your 02 Sensor voltage.

Now this may sound very nice and convenient, because it means that you donít need a Digital AIF Gauge. However, personally, I highly recommend against it. Here are a few reasons why:

- Itís a pain navigating between the Hi-Throttle and Lo-Throttle settings and the Sensor Check menu, especially while driving, when you need to be able to make quick adjustments and see the results very fast, so that you can continue adjusting the tuning graphs.

- People have reported getting wrong 02 Sensor readings when using the blue wire mod. It is suspected that the SAFC puts too much extra load on the 02 Sensor reading and so the reading is somewhat affected. This is especially true if you have hooked up more than one gauge to the 02 Sensor.

- The blue wire is actually meant for a second Air Flow Meter on some Nissans. Some people suspect that the SAFC sometimes tries to send a signal back through the wire. Now if itís connected to the PCM (ECU).. . .you can guess the rest.
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Old 07-28-2005, 10:51 PM
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Default Re: SAFC BLUE WIRE MOD! Is it worth it???

Narrowband sensors are virtually useless
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Old 07-29-2005, 01:03 AM
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Default Re: SAFC BLUE WIRE MOD! Is it worth it???

Originally Posted by xenocron
Narrowband sensors are virtually useless
so your saying that the blue wire mod would basically just give me the same shitty non acurate readings i get from my regular a/f guage.
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Old 07-29-2005, 03:48 AM
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Default Re: SAFC BLUE WIRE MOD! Is it worth it???

yep
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Old 07-29-2005, 06:10 PM
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Default Re: SAFC BLUE WIRE MOD! Is it worth it???

cool, thanks guys!
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Old 07-30-2005, 09:32 AM
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Default Re: SAFC BLUE WIRE MOD! Is it worth it???

Has anyone tried to connect it to a wideband? ...what is the voltage range on the "blue wire"? I know it's retarded, and that 'if you own a wideband, you should be ECU tuning', but, I'm just curious...

Someone who has an SAFC with "The blue wire", connect it to your TPS wire, and tell me if it reads up into the 4v range..
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Old 08-01-2005, 12:44 AM
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Default Re: SAFC BLUE WIRE MOD! Is it worth it???

Originally Posted by TurboEF9
Has anyone tried to connect it to a wideband? ...what is the voltage range on the "blue wire"? I know it's retarded, and that 'if you own a wideband, you should be ECU tuning', but, I'm just curious...

Someone who has an SAFC with "The blue wire", connect it to your TPS wire, and tell me if it reads up into the 4v range..
ill probbaly check if i get time some time. My ecu is under my seat in a little box and ---- so its kinda anoying to get too lol.
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