Wiggins wins TT, Porte wins GC
Wiggins edged time trial world champion Tony Martin (QuickStep) by less than a second over the 25.8km course from Lagoa to Portimao.
Porte was third, some 13 seconds back, to leave him at the top of the general classification by 37 seconds from second-placed Martin and 44 seconds from third-placed Wiggins.
"I knew I had good form and I raced here as preparation for Paris-Nice. So to come away with the stage win and the overall I’m really happy," said Porte.
"Of course to win the mountain-top finish on the third stage was great. I thought I had good enough form to do a good time trial and I was able to finish it off. It’s a nice way to start my time with a new team."
The victory is a major boost for Wiggins, whose Sky team were using the race as one of the first major milestones in their build-up for the Grand Tours later in the year.
And Martin paid tribute to the man who pipped him in Sunday's time trial.
"Wiggins was really strong and he deserved the victory," Martin said. "It was a nice duel with Bradley and I'm sure this year we will see other good fights as today."