my M30 turbo engine/VEMS GenBoard 3.3 build page
2007.07.31. UPDATE
Car is mapped up to 1.2-1.3 bars of boost, probably around 450 BHP on the crank.
- I've got slight missfire problem at the high-rev low-map area (50-60kPa, 3000-5000rpm), don't know the cause.
- Found a strange behavior with mixture: Saturday it was mapped around 0.75lambda in the high-boost area, and the same untouched map (and config) resulted ~0.95lambda monday.
- The only change I can recognize is around -15 degC difference in ambient temp. -Which was not really reflected on MAT sensor's temp.
- that suggests the MAT sensor placement is not good
- -15C is appr +5% air density. So even than, the change is too big
Can you check the wideband parameters? pumppw_zero and nernstdc_target (according to the values you got from WebShop via email, and maybe the values you had inside the ecu when shipped), and redo free-air calibration. Maybe misfire also contrinuted to the lean reading.
2007.07.14.
I had serious troubles with ECU #378: S259 and P259 outputs didn't work at all. INJFET and I259 seemed OK.
Lambda heater value on LCD didn't start to raise at MDE02 command. However later the sensor got hot somehow -not every time. Could this be a config problem?
- Roland reported it as a config problem which means configured Narrow-Band lambda instead of Wideband, which looks Wideband in megatune! -It can easily kill the engine if not detected. Which config variable needs to be checked?
Later I started the car with another ECU. No tuning yet.
OLD DATA
- I plan to use MembersPage/GergelyLezsak/COP ignition
- Just another option: MembersPage/GergelyLezsak/WastedSpark
- I'll need MembersPage/GergelyLezsak/CamTrigger to use them sequentially
- More to come...