Rob W Posted September 8, 2015 Report Share Posted September 8, 2015 Do I need to wire in my GM 3 Bar MAP sensor off the expansion loom or can I use the factory wiring harness and replace the plug: A - ground, B signal, C power. If not, do I just use the signal wire on the expansion loom or double it up with the earth for the IAT sensor as wellI haven't got the ecu running in the car yet.Is there a ver5-6 base map in the ecu or do I download it. The latest version of the software I downloaded last week has the ver5-6 wrx base maps for G+Extreme only. I had the older software for a while prior to purchase of my G4+ and had my head around it but in the newer software on the sample maps I'm playing with it doesn't seem to be giving me a place to configure injector cc's. I found the dead times tab which is fine.I think I'll have a couple more questions this week. Ok, I found a couple of answers on here. Sounds like I can use the factory harness for the MAP sensor - but would like to know if I need to configure it.The ver5-6 wrx base map is in the plug in ecu, so I'll get it powered up and ask any further questions after I have a proper look at it. Quote Link to comment Share on other sites More sharing options...
Simon Posted September 8, 2015 Report Share Posted September 8, 2015 Yep you can wire in to the existing map sensor wiring. Just check the voltages is compatible with the replacement sensor. (don't wire a 5V sensor into a 12V supply)You will need to change the MAP sensor type via PC link and do a calibration.The ECU will have a default map loaded for that application. You will need to do the initial calibrations of TPS, map and ignition timing. before attempting to start. Quote Link to comment Share on other sites More sharing options...
Rob W Posted September 8, 2015 Author Report Share Posted September 8, 2015 Thanks Simon.It's a GM 3 Bar type purchased through the supplier for this application so should be correct voltage as he uses it in his own car and didn't mention any situation with the voltages off the original loom. Quote Link to comment Share on other sites More sharing options...
Dave Kriedeman Posted September 8, 2015 Report Share Posted September 8, 2015 Hi Rob W,to be able to insert the injector cc's and a lot more fuel related and engine capacity data you need to select, Modelled or Modelled - Multi Fuel, instead of Traditional.This is found under the Fuel Main Tab.If you select these other 2 options you will find injector cc's under Injector setup and engine capacity under the Fuel Main Tab.RegardsDave. Rob W 1 Quote Link to comment Share on other sites More sharing options...
Rob W Posted September 9, 2015 Author Report Share Posted September 9, 2015 Thanks Dave. I managed to find my way into modelled. I noticed the engine capacity configuration. So if I put 2.5l in there rather than 2l engine does the Link know all about that and help with the fuel trims? Brilliant Dave. I went back to the main fuel tab after selecting modelled multi fuel and found the injector cc selection. Quote Link to comment Share on other sites More sharing options...
Rob W Posted September 11, 2015 Author Report Share Posted September 11, 2015 I can't find where to change and calibrate the map sensor type on the factory loom - only on the analogue inputs. Quote Link to comment Share on other sites More sharing options...
Simon Posted September 11, 2015 Report Share Posted September 11, 2015 Yep you only do it on the AN volt input as this is where the ECU sees the signal. Quote Link to comment Share on other sites More sharing options...
Rob W Posted October 6, 2015 Author Report Share Posted October 6, 2015 Should the IAT sensor ground be wired to the expansion loom or the chasis? Quote Link to comment Share on other sites More sharing options...
Dave Kriedeman Posted October 6, 2015 Report Share Posted October 6, 2015 Hi Rob W ,ALL INPUT SENSOR GROUNDS MUST GO TO SENSOR GROUND..Also just be careful that some AFR meters such as PLX and Innovate don't have a sensor ground,These style gauges only have an analogue volt output positive, They then have a power circuit which is POSITIVE and NEGATIVE .The negative must not be connected to sensor ground.Ground this wire close to the ECU ground, (NOT SENSOR GROUND).RegardsDave. Quote Link to comment Share on other sites More sharing options...
Rob W Posted October 7, 2015 Author Report Share Posted October 7, 2015 Thanks Dave. I had it right then. The installation manual could be slightly clearer on that point. Quote Link to comment Share on other sites More sharing options...
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