Vems ign based idle cold start

[s2dk]

Hello
My car idle fine with ign based idle setup But when cold it wont idle for about a min or two
I have to keep it alive with some throttle
Is it my Cold start setup i need to make change in? And What change more or less fuel?
I havent made Any changes in it since i started with ign based idle

Cold start is set to -10 and aims at 1200 rpm

Once the engine has been on for 30-60 sec the problem is gone

Any one Got an idea?

[morgenlatte]

send a log or config file, i'll look over it

[s2dk]

Cool Will Do it later when Im on my pc

[quattro-nick]

the same problem over here
when i do a cold start the engine barely keep running on low revs and after a minute or so it turns very well
i dont think this can be solved because i dont use the idle control valve anymore,it's deleted
i have played with the cold start adjustments in vems but no results

[morgenlatte]

unfortunately you need a bit more air at cold start.. maybe open your throttle a litte bit more and retard the timing when it gets warm to come down with the rpm at idle

[s2dk]

Hmm Maybe less fuel with less air?
I dont know yet But Yes Could open it a bit more and the foxit with timing so it runs fine when hot

[s2dk]

Im running 10 or 11 deg timing in idle
Higher the. It runs higher rpm Then it should be lower If i open TB more

[morgenlatte]

you need more fuel when the engine is cold, if you lower your fuel, it won't run better.. try to open the TB a litte bit and let fuel the same.. but send me a log or config anyway

[s2dk]

Okay Will try that
But i Will need to change the timing If i open tb

[morgenlatte]

yes, ofcourse you have to retard it

[Error404]

First, I would quickly try more after-start enrichment for the relevant temperature range When cold most of the fuel is not in a combustible state - condensed on the port walls etc.

[s2dk]

Will try that in a min or two
To see If it helps
It was around 12-15 c herr in the morbing

[s2dk]

Aftenstart did nothing to it sadly

[A80Avant]

Agree with error. I aim for a mixture of about 0.90 when cold, and only try to get it to 1.00 after engine reaches 50C in coolant.
Check afterstart enrichment and also disable lamda control for up. To 50C temp while adjusting your enrichment curve for the above lamda

[s2dk]

okay will try that. engine is not cold atm so have to wait . what about general timing?