PS. Apparantly there is issues with putting a mafless tune on My2010 cars, however this particular workshop in Melbourne have managed to put a relatively sucessfull mafless tune to my car and are confident they will be able to sort out all the issues when they get the car infront of them.
One interesting outcome from the Adelaide workshop is that they managed to sort out the check engine light on the car by changing the battery for a lager one. At first when they said that I'll need a new battery on a 3-month old car I thought they were just trying to maximise their $$$ for this deal, but it seems to have sorted out this issue.
that doesnt sound right, im a mechanic at a holden dealership and i know how the charging system works on VE's, the tuner can control the alternator output by changing the supply voltage to the regulator... those batteries are more than adequate for the job it needs to do...
also about the tune, the AFM system, it very difficult to keep it functioning properly when you have a larger cam. the intake air temp sensor in the OTR has to be in a position so it always reads the air temp correctly even when at low air speed, at low revs the air temp sensor cant read the air temp properly and starts to tell the computer lies and it compensates by adding or taking away fuel into the motor. which is more than likely the reason for the revs hunting
it needs to be as close to the throttle body as possible to run right. but most places that write tunes should know that
the majority of oxygen sensor codes are not critical, usually they are slow responding or low reading codes. they can be setup to not log a DTC when the tune is written, probably something worth doing if it is going to occur regularly