If it's eatin oil at that sorta rate dude u deffo got a prob,u need to find out what ur motors got under the bonnet coz if it's on stardard ecu and injectors and runnin 2 bar then it's gonna melt ,would tend to agree now that it's gonna be HG although could be worse that that so u need to compression check it and sort out a fresh top and , Make sure u go for a group A gaket or better coz a standard prob will fail in no time at the sort of pressures ur runnin, then i'd be gettin a ful set of sensors or at least ECT, Phase ,cap ,arm and get it to a tuner to make sure of the set up . hope u get it sorted buddy looks like a nice motor