Scubaboo Posted October 5, 2018 Share Posted October 5, 2018 I got a Reveltronics multigauge and reading its instructions I understand it has the capability to read OE sensors and display them, you have to scale via laptop though. I am thinking to tap into the existing OE MAP and Coolant sensors to get and display boost and coolant temps. Where are these located on our engines? What are the pros and cons of tapping into existing sensors vs adding new ones? If I tap, what would be the best way to do it? I'd like to disturb the OE harness as little as possible. Link to comment Share on other sites More sharing options...
moral hazard Posted October 5, 2018 Share Posted October 5, 2018 Coolant temp sensor is on the coolant crossover pipe (under the intake manifold, not far from the alternator side of the engine. We have a Maf sensor on our intake box but I'm not aware of the Map sensor. This link may assist you: http://jdmfsm.info/Auto/Japan/Subaru/Legacy_Outback/2010/USDM%20Legacy%20FSM%202010%20(BM-BR)/ Link to comment Share on other sites More sharing options...
cww516 Posted October 5, 2018 Share Posted October 5, 2018 At least on the USDM engine, the MAP sensor is on the cylinder 1 runner on the intake manifold, just behind the power steering pump. Link to comment Share on other sites More sharing options...
Scubaboo Posted October 5, 2018 Author Share Posted October 5, 2018 Thanks mh, that link is informative. I assume we have a MAP sensor aside from the MAF in the airbox, but Im not certain. Link to comment Share on other sites More sharing options...
Scubaboo Posted October 5, 2018 Author Share Posted October 5, 2018 Thanks cww, will check there! Link to comment Share on other sites More sharing options...
cww516 Posted October 5, 2018 Share Posted October 5, 2018 https://legacygt.com/forums/showpost.php?p=5445107&postcount=22541 I've got a picture there showing where it is, although it's a bit of a close-up. The sensor on the left side is for my boost gauge, so that's not original equipment, but that round inline filter is (or should be) in the line from the manifold to the MAP sensor. Link to comment Share on other sites More sharing options...
Scubaboo Posted October 5, 2018 Author Share Posted October 5, 2018 ^thanks for the pic! The sensor with three wires, to the right of the round thingy, looks like a MAP sensor. Is that the OE one or the one for your boost gauge? Link to comment Share on other sites More sharing options...
cww516 Posted October 5, 2018 Share Posted October 5, 2018 The green one is plugged into the alternator, the triangular 3-pin right on top of that round filter is for the boost gauge (that pressure sender is the round one on the left), and the flat 3-pin with the orange cable seals is for the OEM MAP sensor. Re-reading your post, the round thingy you're talking about is probably the boost gauge sender, so yeah, that connector is for the OEM sensor. Link to comment Share on other sites More sharing options...
Scubaboo Posted October 5, 2018 Author Share Posted October 5, 2018 Gotcha, thanks! Link to comment Share on other sites More sharing options...
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