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IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now. Visit Preferences to set your user name Summary of change: Audi ADU very bad cold start --------------------------------------------------------------- 03/02/2012 LoloQuattro 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. Optional: Add document to category: Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.