A special two-day test set aside for the CRT teams that will be using the 'standard' ECU in 2013 has come to an end with only a handful of laps being completed after the onset of wet weather added to further technical issues.

With only Danilo Petrucci able to complete more than ten laps aboard his CAME Ioda Suter-BMW on day one when various issues afflicted his NGM Forward Racing and Avintia Blusens rivals, day two began with persistent rain that would continue for the majority of the day.

As such, lap times were around 20secs lower than the best achieved by a CRT bike at Sepang during last year's race weekend, while track activity was kept to a relative minimum.

Even so, poor weather wasn't the only reason for riders being consigned to the pit lane with Hector Barbera getting only 20 laps in as he suffered continued issues with the wiring loom on his FTR-Kawasaki, while Hiroshi Aoyama opted not to venture out so as to aggravate his wrist injury.

With the arrival of late parts preventing Colin Edwards and Claudio Corti from completing more than a few laps on day one, the NGM Forward pair would spend another frustrating day in the pit lane as the team dialled in its new ECU. Between them, they managed a total of 15 shakedown laps.

Despite completing just four laps, Petrucci was the fastest rider again with a time of 2mins 23.456secs, though the bike was running without electronics due to a series of niggles. With only one bike present at Sepang, Petrucci's team-mate Lukas Pesek was given a chance to try the machine in the afternoon, the Czech rider managing 19 laps.

With the two-day test proving a washout for the three teams permitted to participate, they will at least get three more days of track time, albeit sharing the Malaysian circuit with their other CRT rivals and the works/satellite manufacturers.