Audi ADU very bad cold start
03/02/2012
Now the hot start and idle is solved, I still have a problem to start.
Here are the parameters for cranking.
Priming, crancking setup
Primepulse 0.0ms
Hot start primep temp scaling 20%
Cranking threshold 399rpm
Crank Ignition advance 9.0°
Crank VE 60%
Afterstart setting (-40°c) 12 cycles
Afterstart Warm Time (77c) 0 cycles
% of Warmup Enrichment at highest RPM 66%
% of Warmup Enrichment at 100kpa 90%
My crancking enrichissment curve is:
-20°c 300%
0°c 200%
30°c 150%
70°c 100%
Afterstart Enrichment curve
-20°c 275%
0°c 181%
30°c 138%
20°c 100%
Warmup Enrichment Curve
-40°c 140%
-30°c 135%
-20°c 130%
-10°c 127%
0°c 124%
10°C 120%
30°c 110%
40°c 107%
60°c 100%
69°c 100%
IAC duty at crancking
-40°C 85%
77°C 42%
IAC reference curve just some points
-40°c 60%
...
0°C 30%
...
69°C 23%
Any suggestion ?
What kind of injectors and fuel do you use?
How starting is bad? Is it cranking forever, or firing some strokes but cannot rev up, or revs and dies? ...
You should give more details, preferrably your full vemslog/vemscfg files.