The All Blacks opened the World Cup with a 41-10 win, but were not at their clinical best in every department, with the performance of Kahui one of the positives.
"Getting the ball with much space you should make a fair go of it so I will have to get around and shake a few hands and thank the boys inside for doing a great job," said Kahui, who scored two tries in the win.
Waikato man Kahui gave Tonga credit for not allowing the match to turn into an All Blacks onslaught, with the raging cup favourites scoring only six tries.
"They ran hard, and tackled hard. They brought everything we expected and certainly in that second half they showed they were a quality side," he said.
Kahui also admitted he felt warmed by the reception for the side as they left their hotel for the stadium, with more than 1000 passionate fans there to cheer them on.
"I think there's real pride and we can all be proud to be Kiwis. Everyone seemed to be really proud to be All Blacks fans so it was really nice," added.
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.