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||MembersPage/Sascha/SchnellEthritysix||MembersPage/Sascha|| === Planned ECU mods === ---- '''Want to add''' *2nd wheel speed for traction - can someone make a basic diagram how it should be done? *Input Multiplex - again basic diagram would be nice for mods to the ECU required to run the multiplexer *CAN BUS (when software is available to be able to add our own addresses?) *PWM FAN control with VW J293 module - can anyone verify what modules are compatible? Like: 8E0959501AB 8E0959501K 8E0959501AG E0959501AG?? ** The VW J293 from a Mk5 Golf is known good. ** But when mounting to a BMW why not use a Temic PWM controlled fan from for instance a e46 m54 engine? *** Unfortunately I don't believe I have the space with the 3 row Z3M rad between the water pump. '''Is it possible to configure 3rd trigger to use as freq. input for Ethanol content sensor instead of tying up wheel speed inputs?''' ---- '''Added 2nd serial port but no communication to Afreshtiny?''' I've added a connection to the 2nd serial port on my ECU to be able to drive my AfreshTiny without having to disconnect every time the main COM port to tune. * so it was not ordered that way, but '''home-modified => details please''' * first scope, or measure DC voltage on the ECU TX (DSUB9 female pin2), normally -7V when idle, and lower absolute value like -6V when transmitting). ** If not negative, than perhaps the ECU RX was accidentally connected instead (TX/RX swapped ?) Unfortunately the AfreshTiny is completely unresponsive and shows no data. * Can anyone assist with the setup? ** yes if you detail *** your HW setup *** your measurements *** your round config *** your ECU config (in case * Is there something to enable? ** yes, in VEMS round: AIM capable firmware (does it show 0.5.x indicating AIM capability ?) ** 2nd serial in ECU firmware, see BroadcastDatastreamAim ''Configure 2nd UART to send "5 byte stream"'' FW: 1.2.38 * sniff RS232 stream (connect to PC and read with terminal, or linux screen command). ** with the matching baudrate (19200,8n1 if GPS baudrate is configured 19200 as recommended for VEMS round ) you should see many A3 (appr every 5th byte), as a clear sign of AIM stream being transmitted * '''we will review your exact configs''' ('''you forgot to show us''', so we can hardly tell what you did wrong ) ** '''perhaps baudrate is misconfigured ?''' ** in VT, logging, temporarily enable the necessary flags (like SD byte stuffing), configure "GPS baud rate" ** in the end, disable SD byte stuffing (and possibly SD logging altogether, configure knock input channels if necessary)
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