Dissapointing performance

Doesn it really matter what part you install first? In winter when there is 10 feet of snow car sits on garage 6 months, then I update the new parts tc,exhaust,carb at least. I takes 2 moths to get that tc from usa to here. In this summer I only drive this car and when winter comes, then I install these new parts.
I understand but you don't need a new carb, you need to tune what you have. and you can do that in the summer.