The Argentine feels City fans are now seeing his true form.
Demichelis said: "We are now working together. You have to bear in mind that I arrived late in Manchester and picked up some injuries at the beginning.
"I've been working with Vinny for some months and the results have been great so far, so I'm very happy.
"Saturday's match was an example of what the Premier League is about. We played with a high tempo, plenty of intensity and pace, but so did Arsenal.
"It was a difficult match, and that's why the league is one of the best in the world. That's why we need to work so hard in the eight matches to the end of the season.
"I want to stress that it won't be easy from now until the end of the season, but we have to keep working hard, and hopefully we'll win the title."
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