"We know the engine is slower than the other Aprilias at the moment because we haven't dyno-ed it with these twin exhausts. The Aprilia engine maps are developed to run with a single end can," said Laverty.
"Also we take the air into the airbox through the centre intake, rather than the ART's two side intakes. So a week on the dyno and we'll hopefully find 5-10 horsepower in those areas and bring it up to the level of the Aprilia.
"The data we gained from doing some fast laps on this last day will also be so beneficial for improving the bike. After Jerez, the bikes get crated and shipped straight to Qatar. So it was important to run here because what we take to Jerez will be what we start the first race on.
"I look forward to seeing what the guys can do and riding a revised version at Jerez. We should be able to take another big step."
Such a promising start for the PBM means that Laverty's target of fighting for top CRT honours in his rookie season is firmly back on track.
"Even with a brand new bike this year, I think my target of being top CRT is achievable," he declared. "Obviously the Aspar guys are still ahead of the game, but we just need to get stuck in and we can definitely catch them.
"It's a target, it's achievable and it's something we've got to try and pull off. I'm feeling quite confident. If you'd asked me last night I'd have been a bit more hesitant, but I think even as a brand new bike the PBM will be good enough to do the job.
"I think we've surprised a lot of people at these first two tests - we'll try to keep the surprises running!"
The six riders Laverty outpaced on Thursday were Pesek (Suter-BMW), Petrucci (Suter-BMW), Corti (FTR-Kawasaki), Hernandez (ART), Takahashi (Honda) and Staring (FTR-Honda).