Saturday will see the 26-year-old line up against the Canaries for the first time since sealing a £1m move to the Welsh capital last month.
Pilkington had spent three years in Norwich, and the Republic of Ireland international admits that his spell in Norfolk had run its course.
"I think the time had come for me to go really," he told the Norwich Evening News.
"It wasn't time for me to stay there anymore. I have got a fresh start now at Cardiff City so hopefully I can take that chance and show everyone what I can do.
"I don't have any regrets. I don't like to look back. I would rather look to the future and Cardiff City."
Saturday's clash in Cardiff is scheduled to kick off at 3pm.