To answer your question, I had three sugar free rockstars, 16 oz and vacation mode for 1 week and a half. Work and evening classes return next week so Im enjoying my time off.
And if NISMO were to make an energy drink, I would argue that its the best bang for your buck lmao...
BTW this should be a sticky for new non-z members looking at buying a nismo.... They need to view this valuable 11 page book of information on nismo worthiness