The tourists took a 10-wicket win in Wellington earlier today to win the three-match series 2-1.
The Twenty20 captain told Sky Sports News: "I can't remember a much more powerful performance from an England side. It was key for us to reclaim some confidence here.
"We bowled well and held our lengths early and the way we chased down those runs was pretty spectacular. We worked on the areas we thought needed improving and today we came and put it right. We were on song today.
"It's a quick turnaround but I'm sure we'll be fully switched on for [the one-day series]. We want to win all three series and we've ticked one of them off."
The first ODI takes place in Hamilton on Sunday.