fabiangt79 Posted March 16, 2023 Report Share Posted March 16, 2023 Hi, Anyone knows if links ecu will read defi sensors? EGT, fuel press, oil temp. If anyone has successfully connected defi sensors please share the setup for this 3 please. Thanks Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 16, 2023 Report Share Posted March 16, 2023 The ECU should have no trouble reading them but I suspect you will have trouble finding accurate calibration info for them. Quote Link to comment Share on other sites More sharing options...
koracing Posted March 17, 2023 Report Share Posted March 17, 2023 EGT sensors require a controller of some type to provide output voltage that the ECU can interpret. Are you installing along with the DEFI gauges or gauge controller? Are you looking to set this up with sensor signals going to both the DEFI controller and the Link ecu? Quote Link to comment Share on other sites More sharing options...
superstockneo Posted March 18, 2023 Report Share Posted March 18, 2023 I’ve done with Defi pressure sensors no issues. They’re basically pretty generic 5v 10bar/150psi sensors. Just use the 150psi ti calibration from the dropdown in pclink. As for temp sensors I’m not so sure, i havent gone to the extent of measuring them yet. Quote Link to comment Share on other sites More sharing options...
fabiangt79 Posted March 18, 2023 Author Report Share Posted March 18, 2023 On 3/18/2023 at 12:40 AM, koracing said: EGT sensors require a controller of some type to provide output voltage that the ECU can interpret. Are you installing along with the DEFI gauges or gauge controller? Are you looking to set this up with sensor signals going to both the DEFI controller and the Link ecu? Install as standalone sensors Quote Link to comment Share on other sites More sharing options...
superstockneo Posted March 19, 2023 Report Share Posted March 19, 2023 21 hours ago, fabiangt79 said: Install as standalone sensors LinkEcus do not support direct EGT input as far as i know. Like @koracing mentioned, you would need a controller that can output analog voltage signals for the ecu to interpret. i've used a reveltronics egt-k thermocouple amplifier. they are pretty affordable. Quote Link to comment Share on other sites More sharing options...
fabiangt79 Posted March 19, 2023 Author Report Share Posted March 19, 2023 I have wire in the fuel pressure sensor, red to 5v, white to signal & black to sensor ground. Selected 150psi TI calibration, it was not accurate, read was at 338kpa before engine start, after started went to 442kpa. Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 19, 2023 Report Share Posted March 19, 2023 I always thought the defi EGT sensors were RTD's rather than thermocouples. If you unplug the sensor from the gauge and measure the resistance at room temperature, what is it? Quote Link to comment Share on other sites More sharing options...
fabiangt79 Posted March 20, 2023 Author Report Share Posted March 20, 2023 I only connect to the fuel pressure sensor Quote Link to comment Share on other sites More sharing options...
jdniss Posted March 20, 2023 Report Share Posted March 20, 2023 some bloke on the Subaru forums plotted a few Defi calibration curveshttp://bbs.22b.com/forums/showthread.php?8223-Defi-Sensor-Calibration-Curves Pressure: 0psi=.580v 5psi=.753v 10psi=.837v 15psi=.978v 20psi=1.112v 25psi=1.250v 30psi=1.392v 35psi=1.525v 40psi=1.670v 45psi=1.811v 50psi=1.954v 55psi=2.095v 60psi=2.239v 65psi=2.372v 70psi=2.504v 75psi=2.647v 80psi=2.780v 85psi=2.926v 90psi=3.063v 95psi=3.200v 100psi=3.326v 105psi=3.454v 110psi=3.596v 115psi=3.739v 120psi=3.882v 125psi=4.000v 130psi=4.150v 135psi=4.280v 140psi=4.420vTemp: DegC Voltage 25 = 4.548 30 = 4.481 35 = 4.402 40 = 4.3115 45 = 4.212 50 = 4.1045 55 = 3.986 60 = 3.858 65 = 3.726 70 = 3.583 75 = 3.429 80 = 3.2785 85 = 3.119 90 = 2.9625 95 = 2.8105 100 = 2.6595 105 = 2.509 110 = 2.342 115 = 2.2025 120 = 2.0575 125 = 1.9205 130 = 1.775 135 = 1.657 140 = 1.542 145 = 1.435 150 = 1.329 155 = 1.2355 160 = 1.1565 165 = 1.0755 170 = 1.0045 175 = 0.942 180 = 0.8855 185 = 0.8515 190 = 0.814 195 = 0.795 200 = 0.776 Hodgdon Extreme and superstockneo 2 Quote Link to comment Share on other sites More sharing options...
guvnorlee Posted April 22 Report Share Posted April 22 On 3/20/2023 at 4:11 PM, jdniss said: some bloke on the Subaru forums plotted a few Defi calibration curves http://bbs.22b.com/forums/showthread.php?8223-Defi-Sensor-Calibration-Curves Pressure: 0psi=.580v 5psi=.753v 10psi=.837v 15psi=.978v 20psi=1.112v 25psi=1.250v 30psi=1.392v 35psi=1.525v 40psi=1.670v 45psi=1.811v 50psi=1.954v 55psi=2.095v 60psi=2.239v 65psi=2.372v 70psi=2.504v 75psi=2.647v 80psi=2.780v 85psi=2.926v 90psi=3.063v 95psi=3.200v 100psi=3.326v 105psi=3.454v 110psi=3.596v 115psi=3.739v 120psi=3.882v 125psi=4.000v 130psi=4.150v 135psi=4.280v 140psi=4.420v Temp: DegC Voltage 25 = 4.548 30 = 4.481 35 = 4.402 40 = 4.3115 45 = 4.212 50 = 4.1045 55 = 3.986 60 = 3.858 65 = 3.726 70 = 3.583 75 = 3.429 80 = 3.2785 85 = 3.119 90 = 2.9625 95 = 2.8105 100 = 2.6595 105 = 2.509 110 = 2.342 115 = 2.2025 120 = 2.0575 125 = 1.9205 130 = 1.775 135 = 1.657 140 = 1.542 145 = 1.435 150 = 1.329 155 = 1.2355 160 = 1.1565 165 = 1.0755 170 = 1.0045 175 = 0.942 180 = 0.8855 185 = 0.8515 190 = 0.814 195 = 0.795 200 = 0.776 Hi Guys, Just wanted to check if the data plot above is accurate and if it works? I am looking to remove my defi control unit and use the sensors as standalone with my g4x if it works. Quote Link to comment Share on other sites More sharing options...
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