The Milton Keynes-based outfit and the works Renault team are evaluating the improved engine at Barcelona testing, with the current schedule being for it to be run for the first time at next month's Canadian Grand Prix.

But with talk of a decent jump in horsepower, which could be worth a few tenths per lap, Red Bull boss Christian Horner says it is not out of the question to fast track the plans so it arrives one race earlier in Monaco.

"Let's see how the test goes but if there was any opportunity to be even more competitive in Monaco, of course we would take it," he explained.

"But that's the decision for the guys from Renault, it's not our decision. We'll obviously do the testing and then they will look at the numbers."

Daniel Ricciardo began testing of the new power unit on Tuesday morning but, despite completing a number of installation laps, he had not completed a flying lap several hours into the session.

Monaco confidence

With Red Bull having delivered its first victory of the season in Spain, Horner says that hopes are high of more success in Monaco.

The tight confines of the Monte Carlo track, allied to the fact that it is not a power sensitive track, should be an ideal hunting ground for the Red Bull chassis.

Looking forward to prospects there, Horner said: "Well we thought Monaco was our best chance of taking a victory this year.

"We've capitalised on a day [in Spain] where Mercedes have obviously got themselves into trouble but Monte Carlo should be a track that suits our strengths more than some of the circuits we have been to so far this season."