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Old 02-22-2021, 11:58 AM   #1
GeoNV
Scooby Newbie
 
Member#: 518830
Join Date: Sep 2020
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2009 WRX
dark grey metallic

Default TGV Delete plugs for data logging DIY

Hey, I struggled to find good posts for the 5 pin TGV deletes to use the plugs to data log with. I've got a 2009 WRX, so this only applies to that and check your own wiring diagrams and all that....


https://i.imgur.com/DQSfMyV.jpg

I made this handy color chart for the people like me that can read something and twelve seconds later forget which pin went where.


https://i.imgur.com/ou1TRJv.jpg
ECU pin out to make sure I had ground and power right.


https://i.imgur.com/Hly0IGC.jpg
Proof if you don't believe me!

Now the challenge was- the iwire services connector plugs (which are nice quality BTW) don't have the same color scheme. So you have to look at which harness wire matches which connector plug wire and then connect that appropriately. In this case I hooked up an oil pressure sensor and a wideband O2 analog output- both 0-5 volt.


https://i.imgur.com/idaRupg.jpg

https://i.imgur.com/LHzynPX.jpg
In this case- oil pressure- 5v input is red, ground is black and signal is green.

So green connected to the iwire red, black to black and red to iwirie white with red stripe.

Next the wideband


https://i.imgur.com/tOwAhw5.jpg

brown was wideband voltage signal which connected to iwire red
black was ground which was also iwire black.


https://i.imgur.com/yWYCrO5.jpg

I borrowed the sensor scaling from the romraider forums but named it "Wideband O2"

http://www.romraider.com/forum/viewtopic.php?t=6430

Quote:
<parameter id="P39" name="Wideband O2" desc="" ecubyteindex="12" ecubit="0">
<address>0x000033</address>
<conversions>
<conversion units="AFR" expr="x/50*1.2505+9.6985" format="0.00" />
</conversions>
</parameter>

I'm still figuring out the scaling for my oil pressure sensor. I borrowed this for a 150 psi oil pressure sensor from the romraider forums and then changed it for a 100 psi sensor I have.

I saw this thread https://www.romraider.com/forum/view...p?f=33&t=15528
and they used
Quote:
= (x-25)/1.333333
for a 150 psi sensor, which I changed as my sensor was 0.5v for 0 psi and 4.5 volts for 100 psi

So I used
Quote:

<parameter id="P39" name="Oil Pressure" desc="P39" ecubyteindex="12" ecubit="0" target="1">
<address>0x000033</address>
<conversions>
<conversion units="PSI" expr="=(x-25)/2" format="0.00" />
</conversions>
</parameter>
and yet my idle oil pressure is 100 psi which doesn't seem correct.
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Last edited by GeoNV; 02-22-2021 at 01:07 PM. Reason: trying to get image links to work
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Old 02-22-2021, 12:03 PM   #2
GeoNV
Scooby Newbie
 
Member#: 518830
Join Date: Sep 2020
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2009 WRX
dark grey metallic

Default

Not sure why the embedded image links aren't working. hosted on nasioc image server.
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Old 02-22-2021, 03:23 PM   #3
benflynn
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Member#: 515308
Join Date: Jun 2020
Default

FYI, u can depin the connector and repin to something more accessible like a random set from junk yard
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Old 02-22-2021, 03:33 PM   #4
GeoNV
Scooby Newbie
 
Member#: 518830
Join Date: Sep 2020
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2009 WRX
dark grey metallic

Default

true- sometimes we pay for convenience for sure.
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Old 02-22-2021, 04:31 PM   #5
Mowrer
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Member#: 520062
Join Date: Nov 2020
Default

Seems to concur with this:

https://forums.nasioc.com/forums/sho...uto+meter+2246

I just installed the Autometer 2246 on the TGV left... works great.
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Old 02-22-2021, 04:38 PM   #6
GeoNV
Scooby Newbie
 
Member#: 518830
Join Date: Sep 2020
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2009 WRX
dark grey metallic

Default

I wonder how I missed that in my search- Thanks.
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