mwilkinson Posted March 31, 2016 Share Posted March 31, 2016 I am in the process of removing a whole load of electrical junk from my Supra. Lee over at SRD fitted a Toucan for me on my last service which means I can get rid of my AEM AFR guage along with the Defi gauges and controller. During the course of this endeavour I believe I have stumbled over an issue. It appears that the Syvecs is using the AEM lambda sensor via the AEM guage wiring. Firstly I would like to know if this is a common thing? Secondly, if my Syvecs is indeed using the AEM Lambda, can I still use the sensor without the guage being installed? Finally, if yes to the above, does anyone know how this should be wired in the car as a stand alone item? Quote Link to comment Share on other sites More sharing options...
Wez Posted March 31, 2016 Share Posted March 31, 2016 A Syvecs can indeed use a wideband that has a 0-5v output from a controller, but they also have dedicated wideband input for a number of different off the shelf sensors. I have no idea what sensor is shipped with the AEM gauge, if you can find that out then it should be easy enough to work out if it could work direct. If it were me I would sell the AEM wideband setup complete and just get another sensor wired in. Quote Link to comment Share on other sites More sharing options...
Gpro Posted March 31, 2016 Share Posted March 31, 2016 If the Syvecs is indeed wired into the AEM's signal wire, then no you can't disconnect the guage. Disconnecting the gauge will result in Syvecs not being able to read your AFR's. You can remove the gauge, but the Lambda sensor needs to be wired into the syvecs ECU (multiple wires, not one). Quote Link to comment Share on other sites More sharing options...
Gpro Posted March 31, 2016 Share Posted March 31, 2016 A Syvecs can indeed use a wideband that has a 0-5v output from a controller, but they also have dedicated wideband input for a number of different off the shelf sensors. I have no idea what sensor is shipped with the AEM gauge, if you can find that out then it should be easy enough to work out if it could work direct. If it were me I would sell the AEM wideband setup complete and just get another sensor wired in. I believe the AEM Lambda sensors are Bosch. Should be perfectly compatible with Syvecs. Quote Link to comment Share on other sites More sharing options...
Wez Posted March 31, 2016 Share Posted March 31, 2016 If the Syvecs is indeed wired into the AEM's signal wire, then no you can't disconnect the guage. Disconnecting the gauge will result in Syvecs not being able to read your AFR's. You can remove the gauge, but the Lambda sensor needs to be wired into the syvecs ECU (multiple wires, not one). Indeed, if configured it would go into limp on sensor failure. Its an easy change in sCal under Lamba sensor, input configuration. Quote Link to comment Share on other sites More sharing options...
Wez Posted March 31, 2016 Share Posted March 31, 2016 I believe the AEM Lambda sensors are Bosch. Should be perfectly compatible with Syvecs. Do AEM fit their own (none standard) connector, if so I would still sell the AEM gauge complete and grab another sensor to wire in. Quote Link to comment Share on other sites More sharing options...
mwilkinson Posted March 31, 2016 Author Share Posted March 31, 2016 Thanks for the input guys. You've confirmed my thoughts that the Syvecs was taking a reading from the AEM system. It is my belief that it is indeed a Bosch sensor. I am inclined to wire it directly into the Syvecs. It currently has two wires from the controller. So, if I were to do this I would still need to update my Syvecs to say it is now reading directly from the sensor and not proxy via the AEM guage? I'll need to get a laptop to run the Syvecs software as I only have a mac. Quote Link to comment Share on other sites More sharing options...
Gpro Posted March 31, 2016 Share Posted March 31, 2016 Thanks for the input guys. You've confirmed my thoughts that the Syvecs was taking a reading from the AEM system. It is my belief that it is indeed a Bosch sensor. I am inclined to wire it directly into the Syvecs. It currently has two wires from the controller. So, if I were to do this I would still need to update my Syvecs to say it is now reading directly from the sensor and not proxy via the AEM guage? I'll need to get a laptop to run the Syvecs software as I only have a mac. You can install windows via boot camp on mac. I use this and works great (need to get Ethernet to USB adapter if using newer mac). Regarding the AEM bosch sensor, yes it has an adapter that only works with AEM products (I think). As Wez mentioned, consider selling the whole kit and buy a new Lambda sensor, if not you would have to manually wire it in. Within syvecs you need to select what sensor you have and potentially setup the voltages in order for it to read accurately (from memory, might be wrong). Quote Link to comment Share on other sites More sharing options...
Wez Posted March 31, 2016 Share Posted March 31, 2016 (edited) I use the Syvecs software on a mac too, although not through boot camp, I have a Windows 7 VM using VirtualBox that I fire up when needed, luckily my macbook is old enough to have a LAN port Looking at the AEM documentation, depending when you purchased the AFR gauge it either has a Bosch LSU 4.2 or 4.9, these use a 6 pin connector which should not be removed. EDIT: not confirmed if a Syvecs S6 can drive Bosch LSU sensor directly so I would go a tried and tested route instead Edited March 31, 2016 by Wez (see edit history) Quote Link to comment Share on other sites More sharing options...
mwilkinson Posted March 31, 2016 Author Share Posted March 31, 2016 OK guys I've got the message on this. New sensor it is. What lambda sensor should I go for? Can I as a novice, set a new sensor up on my Syvecs S6, or will this be the domain of a mapper? How would I install boot camp on a Mac. Is it straightforward? My Mac is quite old and does have a LAN port. Quote Link to comment Share on other sites More sharing options...
TheTurtleshead Posted March 31, 2016 Share Posted March 31, 2016 Buy a proper NTK lambda from Syvecs and wire that in. I originally had the same setup as you, but the AEM gauge isn't really accurate enough or fast enough to do the job, hence I added the NTK into a spare bung on my downpipe and left the AEM as simply a nice dash ornament and a visual aid(I have no toucan). Quote Link to comment Share on other sites More sharing options...
mwilkinson Posted April 1, 2016 Author Share Posted April 1, 2016 JTi have a NTK Lambda sensor for £175 including a plug and play syvecs loom with 2.5 m cable. Is this a good price? Also is the plug and play loom thing a bit of a gimmick or desirable? Quote Link to comment Share on other sites More sharing options...
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