In fact,at warm engine and waiting a few minute between each start attemp,he does not start @ first key, 95% of the time @ the second attemp(always without touching the throttle).
Do I have to play with the Crank VE or cranking enrichement for best result,I'm scare to flow the engine end kill the battery/starter with too many cranking. 
Is there other things to take in count or a precise method for tune the starting sequence in all conditions with Vemstune
Ps:if I try immediately after,it start like a charm...
It´s because you´re trying to run the engine fully sequencial, but without a camsync signal.
You have to use "Dual-Out"-mode for your ignitioncoils.
The reference tooth table you should use is:
0
30
0
30
Wire cylinder 1 ignitioncoil to Pin 34
Wire cylinder 3 ignitioncoil to Pin 24
Wire cylinder 4 ignitioncoil to Pin 36
Wire cylinder 2 ignitioncoil to Pin 10
And use "Dual-out"-mode.
And at "Ignition Outputs visual" you are going to use these settings:
0 - Ignition output 2+3 (7A) Grounding, EC36 pin 34, 36
1 - Ignition output 6+7 (7A) Grounding, EC36 pin 24, 10
2 - Ignition output 2+3 (7A) Grounding, EC36 pin 34, 36
3 - Ignition output 6+7 (7A) Grounding, EC36 pin 24, 10
You maybe have to switch places in order to make the correct pair fire.
That will probably solve your problems.
