The Briton started the race from the back of the grid in Mexico due to a cracked chassis but recovered to finish fourteenth. He's hoping to use the momentum to achieve another good result next weekend.
"I'm feeling good for Brazil as it should just carry on the good momentum that we've had in the second half the year," he said. It was a shame not to qualify last time out as we could have shown even better improvement.
"One of my best grid spots was in prospect, but we made up for it in the race. The race pace has been good for a long time now, qualifying pace has been good too.
"We had some decent battles with the McLarens in Mexico, so I think we can be pretty confident going into Brazil.
"The car is getting better every round still, and I'm driving pretty well and getting more and more out of it, so I think that combined with the fact Brazil is a nice track, means I'm hopeful for a positive weekend."
Palmer has only scored a single point this season after he finished tenth at the Malaysian Grand Prix, but is hoping to score again in the final two races of the season.
"The season has gone so quickly," said Palmer. "We just have to give it our all. I'd love to get another points finish before the year is out, so I will be pushing for that all the way for the final two races."
Bahrain International Circuit - Winter testing