megstubmw Posted September 10, 2019 Report Share Posted September 10, 2019 I got this ecu and have no idea where it was installed, also can't find any info on internet. Would be nice to know what can I do with it, what trigger inputs is supported, can i run sequential spark/fuel with it? thank you. Also, what exactly these switches are for? Quote Link to comment Share on other sites More sharing options...
Simon Posted September 11, 2019 Report Share Posted September 11, 2019 Its a G1 Linkplus with V14 firmware. Manual can be found at http://forums.linkecu.com/applications/core/interface/file/attachment.php?id=2537 It has a Opto/Hall board fitted so will suit any application that has a tooth for each TDC and opto or hall sender. Quote Link to comment Share on other sites More sharing options...
megstubmw Posted September 11, 2019 Author Report Share Posted September 11, 2019 Thank you for answer. Can you please explain a little more about opto/hall board, do I have crank and cam inputs or just crank and what teeth configuration is supported or it is adjustable in software? Also, what are these switches for? Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 11, 2019 Report Share Posted September 11, 2019 The dip switches are to set whether it uses the rising or falling edge of the hall signal. The switches work in pairs so switch 1&2 are for the crank (I think) and 3&4 are for the cam. They need to be set opposite of each other. So for instance if 1 is on, 2 must be off. If 3 is on, 4 must be off. There are two little LED's on there so you can see when the boards is seeing the tooth. In these old ECU's all trigger decoding was done by this sub-board - you can not adjust any trigger settings in the software. As Simon mentioned above your one is a "1 tooth per TDC" type. So for instance if you have a 4 cylinder you want 2 teeth 180deg apart on the crank or 4 teeth 90deg apart in the distributor. It will also need a single cam tooth if you want sequential fuel or more than a single coil (distributor). Also be aware, during cranking the ecu does not control advance, it sparks at the exact instant the trigger is received. So you need your "teeth" to be positioned around say 10deg BTDC for easy starting. Mostly back in the day when this ECU was current, the trigger was a distributor so you just rotated your distributor to give you the correct cranking advance. This is also how you set your "base timing". I dont have a document for this specific sub board, but I will attach one for the older EMX ecu that used a similar trigger board to give you a bit of an idea. Optical-Hall SmartLink.pdf Quote Link to comment Share on other sites More sharing options...
megstubmw Posted September 12, 2019 Author Report Share Posted September 12, 2019 Thank you, that is so helpful! Last question, do I need mechanical sync between crank/cam signals for this ecu? Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 12, 2019 Report Share Posted September 12, 2019 4 hours ago, megstubmw said: Last question, do I need mechanical sync between crank/cam signals for this ecu? Not sure what you mean hear? Obviously the cam tooth will need to occur once every two crank revs and it will ideally be roughly centered between two crank teeth. Quote Link to comment Share on other sites More sharing options...
megstubmw Posted September 12, 2019 Author Report Share Posted September 12, 2019 " ideally be roughly centered between two crank teeth. " that was my question, thank you again :-) ! Quote Link to comment Share on other sites More sharing options...
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