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VrpDCNzZfIOS

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About VrpDCNzZfIOS

  • Birthday 09/27/1980

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  • Location
    Portland, Oregon
  • Car
    2005 LGT 5MT Limited

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  1. The formulas I used for both AFR and EGT are listed below. I just re-purposed the Tumbler Valve parameters. For EGT there are two versions of the Celsius calculation, i forget which one was most accurate, I think the first one, not C2. <parameter id="P39" name="Tumble Valve Position Sensor Right" desc="P39" ecubyteindex="12" ecubit="0" target="1"> <address>0x000033</address> <conversions> <conversion units="C" expr="x/50*294.1176" format="0" /> <conversion units="F" expr="32+9*(x+40)" format="0" gauge_min="0" gauge_max="2000" gauge_step="200" /> <conversion units="C2" expr="(x+40)*5" format="0" gauge_min="0" gauge_max="1000" gauge_step="100" /> </conversions> </parameter> <parameter id="P40" name="Tumble Valve Position Sensor Left" desc="P40" ecubyteindex="13" ecubit="7" target="1"> <address>0x000034</address> <conversions> <conversion units="AFR" expr="x/50*2+10" format="0.00" /> </conversions> </parameter>
  2. Just got around to installing two PLX sensor boxes, EGT, and Wideband AFR. I used the daisy chain setup to install 2 DM-6 gauges in addition to sending the analog 0-5v analog outputs of th PLC boxes directly into the Subaru ECU via the left and right Tumbler angle inputs. I wanted to keep the engine bay clean so I installed the sensor boxes right next to the cars ECU. I cut and repinned the connectors for the sensor boxes so i could use an existing grommet to get the wires inside. On the 2005 Turbo legacy I located the input pins as Connector C135, pins C26 and C27. I even tapped the ECU switched power since these sensors don't use very much power. The power came from Connector B136, Pin B4 for ground (Black with white stripe). Switched +12 volts on Pin B5 (Yellow with light Blue stripe) located right next to the ground. The interesting thing about this is, the gauges work as long as the ECU is on, so they remain on for a few seconds after the vehicle is off due to the timed delay. In romraider I added a few formula's. Some from this thread and one taken directly from the manuals that came with the gauges. For EGT I did a little math to arrive at the correct formula and the numbers seem to match up perfectly with the DM-6 gauges. The "C2" is the formula for the stock EGT sensor that I threw in just to take a peak at. But the PLX sensors seem to be scaled from 0 to 1500C with the 0-5v swing. More testing when I do some good data logging. <parameter id="P39" name="Tumble Valve Position Sensor Right" desc="P39" ecubyteindex="12" ecubit="0" target="1"> <address>0x000033</address> <conversions> <conversion units="C" expr="x/50*294.1176" format="0" /> <conversion units="F" expr="32+9*(x+40)" format="0" gauge_min="0" gauge_max="2000" gauge_step="200" /> <conversion units="C2" expr="(x+40)*5" format="0" gauge_min="0" gauge_max="1000" gauge_step="100" /> </conversions> </parameter> <parameter id="P40" name="Tumble Valve Position Sensor Left" desc="P40" ecubyteindex="13" ecubit="7" target="1"> <address>0x000034</address> <conversions> <conversion units="AFR" expr="x/50*2+10" format="0.00" /> </conversions> </parameter> I wanted the EGT sensor before the turbo and didn't feel like taking off the turbo and up-pipe, so I drilled and tapped the stock Subaru exhaust manifold right near the stock AFR sensor. Just used a grinder to make a flat surface on it, turned on the engine and drilled it out with a bunch of sticky tapping oil to make sure the shavings blew out at me rather than go through the turbo. Other things of note, I also tapped the ECU wires for the tachometer/injector to send to my remote start alarm setup. I even tapped the neutral safety switch which the manual transmissions provide on these Subaru's, however I had to make a transistorized circuit to correct the neutral safety switch values so that the alarm system knows for sure if the car is in gear or is in neutral before the remote start will activate. And finally, the E-brake wire is a secondary back-up for the remote start signal to make doubly sure the remote start will not active if the vehicle is in gear or if the E-brake is not set. The last image is the tumbler valve input which is EGT in Celsius. It's already greatly helping dial in the tune.
  3. Fun things indeed! Also almost have the motivation to finally put my din trim back together. Was doing a bit of stereo and gauge wiring and haven't finished putting it all back together yet.
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