MembersPage/Reidar (2008-05-05 18:05:09)

Hi :)

Need som help setting up my VEMS Motronic-55, on my AUDI RS2

116562328O341170106.jpg


Engine info:


Q: So my high ohm 720cc injectors need power resistors? I think mine is the same as sold in the vems shop. Siemens deka 727cc@ 4bar


Q: I have changed my mind, and want to go for the NTC type IAT sensor. My vems is set up for the PTC type.

What to do?

A: Remove the additional pull-up resistor on the PCB which is mounted on top of the regular pull-up for the IAT analog input. Other people might clarify with pictures of the PCB and where you must do the work.

A: I allso recived an e-mail from vems shop now:

Fortunately this is easy. Remove endplate (endplate only, 4 screws).You see a small resistor near the main processor, close to board edge, parallel to board edge.An 510 Ohm (0805 size SMD) resistor is piggybacked on a 2k7 resistor.Remove the 510 ohm, and you just converted back to a normal weak pullup suitable for NTC.

I guess this would be easy.


Q: I have some msq files for the motronic 55, but i can not understand the ignition outputs.. what is H[2]? and what does 04..00 stand for? Does this have any thing to do with the fiering order?

A: The H2 is the exact firing order of the ign outputs more info at this page http://www.vems.hu/wiki/index.php?page=GenBoard%2FManual%2FDigitalOut%2FTable

If the car is Audi s2 you will find some useful info in this page http://www.vems.hu/wiki/index.php?page=MembersPage%2FPeterJensen/AudiSwiring

Regards Peter

Q: Okay. If i understand. this should be correct when the firing order is: cyl 1-2-4-5-3

262860859O609238732.jpg

here:

EC36-11 points to POS CYL3

stepper-A Points to POS CYL5

stepper-B points to POS CYL4

stepper-C points to POS CYL2

stepper-D points to POS CYL1

Is this correct?

A: ?


Q: What firmware to use? can i use 1.1.23 12x12?

A: Don't use 1.1.23. See this page: MembersPage/MattiasSandgren/OskarAudiSFour
Download 1.1.27 on the MegaTune page and go from there.
Q: How to upload tempsensor files?

A: You have to use the tempsensor_upload script that comes with the MegaTune package to upload a firmware containing the correct temperature tables, see EasyTherm and EasyTherm/SensorTable.


Q: When i downloaded megasquirt, there was a PINOUT picture included.. Is there a simular picture for the Motronic 55 plug?

A: Begin reading here: VemsAudiAan Take a look at the spreadsheet and as hinted earlier you can find a picture here: MembersPage/PeterJensen/AudiSwiring