nos on a derv?

[Dum-Dum]

There is so much to write on this subject but long story short on the XUD you need your pump set up to be able to give the fueling to match as you cant just use a wet kit to spray extra fuel down the inlet or you'll get detonation.

IMO best time to use it is to help spool the turbo when the fuel pump would be trying to bog as the nos will help burn it.