Well, I couldn't say
Adrien Bertin tuned our engine. But he hadn't to change the setting after installing the new venturi.
Tuning after the new manifold is not a good fact because at the same time he build a new clutch for us
PS: Well the pitstop was not the problem, the problem were the tires! After about 10 minutes I had no grip in the front and my medium time went from medium 15sec to medium 16sec