thanks, i did it successfully connected with tunerstudio on com port.jsmcortina wrote:Yes. Connect FUSED 12V to pin 28 and ground to any of the ground pins.
James
but still cant complete wiring diagram. no one has m52 engine with ms3x?
Moderators: jsmcortina, muythaibxr
thanks, i did it successfully connected with tunerstudio on com port.jsmcortina wrote:Yes. Connect FUSED 12V to pin 28 and ground to any of the ground pins.
James
i used this diagram: http://www.megasquirt.325ix.com/MS_to_M ... 3.3.1.htmlhassmaschine wrote:if you want to use all stock wiring you'll need to build a relay circuit like this one:
http://www.megasquirt.325ix.com/MS_to_M ... rcuit.html
I've only half started the M52 wiring chart so I don't have the equivalent pinouts (mine is for an M50 vanos).. but basically: the ignition switch sends a signal to the ECU, the ECU turns on the main relay. The main relay powers the ECU and all the engine electronics. Everything is already fused.
I have a friend who's also added a capacitor to this circuit because he found voltage drops were shutting off the circuit making it look like synch loss. I'll have to talk to him and add it to my diagram, although I haven't had this problem. BMW is using a capacitor on the stock circuit, though.
what specific questions are you having with your wiring?
ok, thats clearhassmaschine wrote:29 on the main board is just an open pin. you could use any of the 4 open IAC pins on the DB37, or SPR1-4. Their selection is arbitrary. the IAC pins aren't connected to anything unless you jumper them somewhere - since I'm not using the stepper IAC hardware (using the MS3x 3 wire PWM IAC support), I used those pins for the relay circuit.
yes, i've found wiring diagram for siemens 41.1 on a website you wrote on a first page and changing pins according to it.hassmaschine wrote:my diagram is based off the Motronic ECU, your M52 has a Siemens ECU and uses a different pinout. Also, I built it to use on an M20, which is why things like the VVT pin are used for other purposes (since VVT is just a generic PWM output). Just be careful that you aren't copying my Motronic 3.3.1 diagram for a Siemens MS41 harness. The functions are the same, but the pin locations aren't.
m50 cam sensor will be ok yes?hassmaschine wrote: also, I believe you need to change the cam sensors to a hall type, the cam sensors on the M52 are some sort of hybrid sensor that as far as I know, MS doesn't support.
i use ms3x outputs. like on your motronic to ms3x diagramhassmaschine wrote: as far as the VB921s - are you using the mainboard outputs? why not use the MS3x outputs? you'll have to add 6 coil drivers either way. BIP373s are prefered over VB921s, but you could use the VB921 of course. it's just not as reliable.
Can you please specify where exactly should this capacitor be and a size of it? I am building an adaptor for my m50 wiring loom and also for my friends m20 using "start cirquit" descriptions from Chris325ix and Ryan Nimickhassmaschine wrote:if you want to use all stock wiring you'll need to build a relay circuit like this one:
http://www.megasquirt.325ix.com/MS_to_M ... rcuit.html
I have a friend who's also added a capacitor to this circuit because he found voltage drops were shutting off the circuit making it look like synch loss. I'll have to talk to him and add it to my diagram, although I haven't had this problem. BMW is using a capacitor on the stock circuit, though.
can i use stock coil drivers? i've found them in stock 41.1 ECU. "STP8055" by motorola
good thankshassmaschine wrote:yes, you can, just build an external box and make sure they're heatsinked. might also want to check what bias resistors are being used by the stock ECU. you can trigger them off the MS3x coil outputs.
The manual page has the answer:maxo-tt1 wrote:and cant find VVT settings in TunerStudio advanced engine section. why?
Jamesvvt manual page wrote:Note! This feature is only available in 1.1 alpha codes
sorry but what that means? 1.1 alpha code of what?jsmcortina wrote:The manual page has the answer:maxo-tt1 wrote:and cant find VVT settings in TunerStudio advanced engine section. why?Jamesvvt manual page wrote:Note! This feature is only available in 1.1 alpha codes
and how to get this alpha code? i have to download if from somewhere or? please some more hintprof315 wrote:V1.1x alpha code is the the current test code that has all of the newest features in it including VVT. The current version right now is 1.18. It is however TEST CODE and as such you use it at your own risk. That being said I have been running alpha code on all of my MS3 projects from day one with only a couple of issues in the earlier versions.