New Parramatta coach Brad Arthur has cautioned against getting carried away by Sunday's 36-16 win over the Warriors, but said the defensive attitude of his players showed the club is slowly turning a corner.

The Eels went into the new season with successive wooden spoons and without a finals appearance to their name since 2009, but under Arthur, the club's seventh coach in eight years, they produced a sizzling display to open the campaign in impressive fashion.

Arthur said part of his message to the squad since taking over from Ricky Stuart was to banish talk of the past, but having smashed the Warriors 40-10 in this same fixture last year, most of the 14,397 crowd at Parramatta Stadium were hoping the win was not another false dawn.

Hat-tricks from wingers Semi Radradra and Vai Toutai and a Jarryd Hayne effort laid the foundations for the win but Arthur was more pleased with the manner in which his side defended their line.

"The thing that really impressed was the attitude to defence," Arthur said.

"At one stage we defended five sets and then went down the other end and scored a try.

"Defensively we were strong and although there is a couple of things we need to improve on. The last 10 minutes we put the cue in the rack and we need to be a more ruthless there."

Fijian flyer Radradra, who debuted last year, took his tally to eight in as many games and Toutai, who endured a difficult first season in 2013, finished their tries superbly but the coach played down their contributions.

"It's the job of the forwards to get the ball to the wing and they really played the part there," he said.

"No disrespect to wingers, but their job is to score tries and finish things off."

Having taking over a team bereft of confidence late last year, Arthur admitted he had no expectations on the outcome of the game but said he needed to see if what he's been preaching since his arrival had been taken on board.

"I just wanted to see that they had a real desire and a want and just finding a way to do things," he said.

Warriors coach Matt Elliott said his side had plenty to work on before they face St George Illawarra at Eden Park next week but denied the display was a carbon copy of what happened 12 months ago.

"We would have like to have performed better than that, but certainly I have to acknowledge the opposition tonight, they were very good," Elliott said.

"We were not quite where we wanted to be but I think if you compare it to last year's performance it is wide of the mark.

"There were some solid performances from our guys but physically we need to be better."

It was chastening debut experience for big-money signing Sam Tomkins, who showed some encouraging signs by setting up two of his side's three tries.

However, he was at fault for Radradra's hat-trick try when a high bomb bounced off his chest.

"He had a tough night, but Sam's plays his best football in attack and relies on us offensively to have a really strong d-line and we never really pulled that off tonight," he said.