Daniel Burgess1436215411 Posted July 13, 2014 Report Share Posted July 13, 2014 Hi guys  I have a LEM G3 running an ej20 subaru racecar Currently im looking at using this instead of upgrading and juggle a few things and put a few different connectors to analog and digital inputs but my question is because i have upgraded to g4 software and i want to run more than 21psi (3bar) I have to run a GM 3BAR I now have no inputs left for say flexi fuel ethanol sensor, boost control dial or oil temp  Is it possible to remove the internal map sensor and solder wires in the same location or my GM 3 bar sensor ? Quote Link to comment Share on other sites More sharing options...
Daniel Burgess1436215411 Posted July 13, 2014 Author Report Share Posted July 13, 2014 I have found some datasheets to identify the pins of the internal map sensor with map signal(vout) ground and the 5v input(VS or vcc) but unsure of the others be V1, V2, and VEX Quote Link to comment Share on other sites More sharing options...
Daniel Burgess1436215411 Posted July 13, 2014 Author Report Share Posted July 13, 2014 http://www.linkecu.com/forums/lem/115147585    have just found this also   if i was looking to run 25psi boost http://nz.rs-online.com/web/p/pressure-sensors/7191106/   MPX5700AP would this replacement internal map sensor would be suitable or far too large?  This would also be set to 7 BAR Map Sensor on the PC Link software Quote Link to comment Share on other sites More sharing options...
Daniel Burgess1436215411 Posted July 13, 2014 Author Report Share Posted July 13, 2014 Between 15-25 psi boost would be the range it is going to be used in Quote Link to comment Share on other sites More sharing options...
Simon Posted July 14, 2014 Report Share Posted July 14, 2014 The MPX5700AP was what we used as the &bar map option Quote Link to comment Share on other sites More sharing options...
Daniel Burgess1436215411 Posted July 14, 2014 Author Report Share Posted July 14, 2014 Do you recommend swapping to the 7 bar or keep gm 3bar? Quote Link to comment Share on other sites More sharing options...
Daniel Burgess1436215411 Posted July 14, 2014 Author Report Share Posted July 14, 2014 Are there any alternatives to the mpx5700ap or is it of your under 22psi you run the 2.5 and over you run the 7? Â Will the 7bar still be accurate for what we are trying to acheive? Quote Link to comment Share on other sites More sharing options...
Simon Posted July 15, 2014 Report Share Posted July 15, 2014 You are limited by the selections in PC link. SO for a LEM the is 7 or 2.5 bar. It will do the trick for you. Quote Link to comment Share on other sites More sharing options...
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