"This new power-unit we have developed is a completely industry-relevant engine formula and this is why we could attract some new engine manufacturers and keep some of them on board actually," he said.
Renault, one of the three companies producing the engines, threatened to quit F1 if the sport did not introduce a new formula that reflected the greater efficiency now popular in road-car power-plants.
And Honda, which quit F1 in 2008, has decided to come back to the sport with McLaren in 2015.
The new F1 features 1.6-litre V6 turbo engines with extensive energy recovery systems, and cars must complete races using no more than 100kg (about 130 litres) of fuel.
Boullier, McLaren's racing director, added that at the first race of the season in Australia last weekend the new cars had proven more of a challenge for the drivers than last year's.
"This new formula has a very torquey engine, less aerodynamic downforce. It is more of a driver formula and you could see that this weekend; there were a lot of small mistakes.
"And even if there is a need to manage and save fuel and energy, it was still interesting to see some overtaking and it was really a challenge for the drivers.
"It's true the engine sound is different but it's not very different from the turbo sound we had in the 70s [and 80s]. It needs a little bit of time to see what is going on and how it develops."
The team bosses of Williams and Mercedes have backed his views.
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