Engine specs:
- cyl count=6
- main trigger= 60-2 on crank http://www.vems.hu/wiki/index.php?page=MembersPage%2FGergelyLezsak%2FTrigger
- T3/T4 turbo 50 A/R Compressor, 0.63 A/R Turbine .57 Trim 3" inlet stage 3 wheel
- 440 cc bosch high imp petrol injectors
- 50cc/s LPG injectors low imp.
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EGT
My GenBoard (preassembled serialNr=355)
MegaTune will log both mcp3208channel4 and mcp3208channel3 (raw values). However, only mcp3208channel4 is displayed on LCD page0 (mlp00).
Raw values mean that the
- real_celsius_value = egt1_offs + (raw_value * egt1_cal / 256) where typical values:
- egt1_offs=00
- egt1_cal=49 (that is decimal 73)
Peak and Hold
PWM % lasts typically 1.0 ms.
Fuses
These are commonly used :
| Current consumer | Fuse rate | 'Description/Comment |
| VEMS Genboard | 3A | It actually draws a couple of hundre mA, but this is the smallest automotive fuse commonly found in gas stations |
| Lambda | 5A | |
| Injectors | 10A | This could be the main fuse, and a separate 3A fuse for each injector for safety if you get a short in an injector you could fry the driver with only one main fuse |
| Ignition coil | 10A | Possibly even higher, depending on the coil primary resistance |
MegaTune is a software to change / tune config/table values in VEMS controller:
- How can I select full sequential injection?
- alternate=... (cylcount - 1)
- injection sequence h[0]= ...
- See GenBoard/Manual/DigitalOut, GenBoard/Manual/DigitalOut/Table,
Connect laptop to the Genboard.
I can't get the Man => Hello response but when terminal is connected and the genboard is powered up I recieve the following message: <0> After this message communication is lost.
I use a usb-serial cable, and a laptop with an AC adapter feed. I've checked and double checked the following things:
- EC18pin14, 15 and ground.
- Put a extra ground wire between laptop ground and chassisground.
- 9600 baud, 8 data bits, parity none, stop bits 1, handshake none. In both hardware settings and Terminal settings.
- reversed the EC18pin 14 and 15. Result was that I didn't recieve the <0> message at power up any more.
- GND5 connections
- Power connection
The LCD screen displays like it should. No problems there.
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