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whos running the sos flex fuel kit

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Old 09-02-2015, 06:45 AM
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I just called gm and both have valid gm part numbers. Parts guy said the same thing, that they're pretty much the same. Now I'm curious what sensor we use here at Toyota.

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Old 09-02-2015, 06:58 AM
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If anyone else is curious, no sensors on flex fuel Toyotas.
Old 09-02-2015, 06:59 AM
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Originally Posted by CoolGuy094
They are the same thing, just different part numbers. The larger one has mounting holes, the smaller one does not. They have the same connector and send the same electrical signal. I would imagine that the sensing internals are identical. Just made for two different GM vehicles.
I've read that some of these sensors capture fuel temp as well as composition. I don't think the AEM V2 can do anything with fuel temp data except record it, but still it would be nice to know. Any idea of either/both of the GM sensors do this? I've never found a definitive list with that info.
Old 09-02-2015, 07:01 AM
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Originally Posted by Redline S2K
If anyone else is curious, no sensors on flex fuel Toyotas.
Wow, then how do they do it?
Old 09-02-2015, 07:40 AM
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Originally Posted by Habitforming
Originally Posted by CoolGuy094' timestamp='1441204882' post='23734458
They are the same thing, just different part numbers. The larger one has mounting holes, the smaller one does not. They have the same connector and send the same electrical signal. I would imagine that the sensing internals are identical. Just made for two different GM vehicles.
I've read that some of these sensors capture fuel temp as well as composition. I don't think the AEM V2 can do anything with fuel temp data except record it, but still it would be nice to know. Any idea of either/both of the GM sensors do this? I've never found a definitive list with that info.
Yes, both sensors output fuel temperature as well as ethanol concentration. It is a single digital pulsed output signal that contains both the temperature and concentration data. The frequency of the signal is linearly equatable to the ethanol concentration (50-150 Hz = 0-100% ethanol) and the pulse width of the signal is linearly equatable to the temperature (1-5 ms = -40 degC to 151.25 degC).
Old 09-02-2015, 08:07 AM
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Originally Posted by CoolGuy094
Originally Posted by Habitforming' timestamp='1441205943' post='23734503
[quote name='CoolGuy094' timestamp='1441204882' post='23734458']
They are the same thing, just different part numbers. The larger one has mounting holes, the smaller one does not. They have the same connector and send the same electrical signal. I would imagine that the sensing internals are identical. Just made for two different GM vehicles.
I've read that some of these sensors capture fuel temp as well as composition. I don't think the AEM V2 can do anything with fuel temp data except record it, but still it would be nice to know. Any idea of either/both of the GM sensors do this? I've never found a definitive list with that info.
Yes, both sensors output fuel temperature as well as ethanol concentration. It is a single digital pulsed output signal that contains both the temperature and concentration data. The frequency of the signal is linearly equatable to the ethanol concentration (50-150 Hz = 0-100% ethanol) and the pulse width of the signal is linearly equatable to the temperature (1-5 ms = -40 degC to 151.25 degC).
[/quote]

Awesome response, thank you! Any idea if AEM V2 can decode both, or will that require the zeintronix device?
Old 09-02-2015, 09:19 AM
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Toyota uses the AF sensors, long-term/ short term fuel trim, and fuel consumption to determine alcohol density. Adjusts fuel maps, pressures depending on the values the ecu calculates.

I'm not sure about the temperature but aem v2 and infinity can read ethonal content.

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Old 09-02-2015, 09:57 AM
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I believe that AEM V2 and Infinity can decode both the composition and temperature data from the DPI signal from the sensor. Don't quote me on that, though.

I don't really see fuel temperature as a viable channel for data logging or observation, so not sure why you would even want to see it. IAT and EGT, sure... but fuel temp, I dunno.
Old 09-02-2015, 12:27 PM
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Originally Posted by riceball777
Originally Posted by klopot07s2k' timestamp='1441162842' post='23734029
The ap1 comes with a return fuel system, and the ap2 is a returnless fuel system, so since you are looking for more horsepower considering that you want to run e85 your gonna need to get the return type. SOS sells the return system with the flex fuel kit, which I am leaning on buying.


EDIT: just realized you have a 2002 Ap1, my bad
Only the 2006+ drive by wire s2000s have a return less fuel system.
Correct, I keep forgetting that 2004 2005 have F22. In Japan the F22 started in 06.
Old 09-02-2015, 01:05 PM
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Originally Posted by CoolGuy094
I believe that AEM V2 and Infinity can decode both the composition and temperature data from the DPI signal from the sensor. Don't quote me on that, though.

I don't really see fuel temperature as a viable channel for data logging or observation, so not sure why you would even want to see it. IAT and EGT, sure... but fuel temp, I dunno.
I'm a data whore. If it's available, I want to capture it. Plus the last update to AEM left a bunch more logging channels available, and I'm barely using half of them. The fuel temp is in no way make-it-or-break it for going with that sensor, just a curiosity.


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