Ferrari have found themselves in a growing controversy regarding a rumour about an illegal power boost system.

The Ferraris were investigated, but Formula 1 race director Charlie Whiting claimed that after monitoring during the Monaco Grand Prix, he is now satisfied with the Ferrari’s compliance.

Despite earlier reports seem to suggest, no extra monitors were fitted into the battery unit of the Ferraris, and instead, they used a complicated method to get the data that they needed.

Whiting also shared that a much more straightforward way of monitoring will be employed during the Canadian Grand Prix.

"What we will have for Canada will be a better system which will help us get things done much, much quicker, because it's taken us a couple of races to get to the bottom of it," he declared.

"We want them to put extra monitoring on, but at the moment we're having to do it in a painstaking way. It takes a little longer than we would like. We'll arrive at the same conclusion, I would imagine. In Canada, they will be providing a change of software."

The controversy is around Ferrari’s use of its energy recovery system (ERS) on its SF71H Formula 1 car.

There has been growing concern that Ferrari’s twin battery unit, which is unique to them among the entire field, is allowing the team to give their engines an illegal extra boost of energy flow beyond the 120kW limit, by-passing the FIA sensors.

Whiting’s investigation was to determine whether this was the case or not, and explained: "What we're trying to do is to monitor exactly what the differences between the two halves of the battery are. That's the crux of the matter.

"Other systems treat their battery as one. Ferrari, it's one battery, but they treat it as two. That's the fundamental difference, I don't think it's a secret I'm giving away there."

The race director also explained the arduous process they have to undergo to test the batteries.

"It's not simple, because these things, not only are they sealed, because they only have two of them for the season, it's not just a straight matter of plucking a sensor off the shelf and putting it on. It needs better integration for that.

"I'm not sure when any more additional sensors can be fitted. Probably not until next year, if the truth be known."

“Obviously we heard about it but it's normal that every now and then you have something popping up,” Vettel said.

“This time it's for us probably, but in four weeks' time, it will be for someone else.

“Ultimately I think it's the FIA's job to look after it and I think we trust them as much as the other teams trust them. But that's it, I think it's pretty straightforward. I think it's more outside talk rather than stuff we will discuss inside.”

Whiting also wanted to make it clear that Ferrari is being cooperative throughout the whole investigation

"Their duty is to satisfy us that the car complies, as you know, but they were finding it hard to satisfy us.

"I think it's wrong to say that Ferrari didn't communicate, because they've been very helpful the whole way.

"It's just been very painstaking and detailed work to try to get to the bottom of how their system works, and hence give us the comfort that we need."