Hurricane have released the next generation of compressor boosters. The 6T-276-41 and 4T-276-41 replace the popular M41's and 636's respectively.
Both the 6T-276-41 (1800cfm) and the 4T-276-41 (1400cfm) use a four cylinder single stage booster block. The 6T is powered by a Caterpillar 3208, while the 4T is powered by the John Deere 4045.

Airdrill, the Australasian dealers for Hurricane, worked closely with Hurricane and drilling contractor Ausdrill, to develop an improved regulation system. These are now standard options on the new Hurricane Boosters. By controlling engine rpm through the engines electronic system, the need to load and unload the booster is greatly reduced, leading to smoother and more efficient operation and improved service life.

Peter Hall, R&D engineer for Airdrill, described the system as "an automatic unload system working in tandem with an idle back system". Peter explained that the system alleviates the unloading valve from unnecessarily kicking in and therefore saves the time for the pressure to reduce adequately enough for it to disengage and allow pressure build up again.

"Quite often, it is a case of simply not requiring the quantity of air at a given pressure that is being supplied from the booster, rather than stopping it altogether. This is where the 'idle back' system becomes beneficial.

"Just prior to the system operating pressure reaching the designated pressure that enables the unloader system to be activated, the booster is reduced back to its idle speed but not put in to the unload configuration, hence it will still be producing air. As more air is required, the booster will pick up in revs again to meet its needs without ever engaging the unloader valve. If air is not required in a reduced capacity for a short duration, then the pressure system build up will continue and the unload system will engage as per usual."