Talk:Project Impulse/@comment-109.227.48.22-20150425203140/@comment-79.71.120.253-20150425204325

Normally after each first even if each day. With increasing time.

I've found given the low cost of upgrades it's easier to just buy them as they come. Given the cars woeful lack of speed you do need upgrades to get very far.

I have all stage 3, some stage 4 and currently waiting the 14 hours or whatever for stage 5 to be unlocked. I will be on day 6 tomorrow.