How to check if it's knackered???

Disconnect the electrical connection from the MAF then drive car. If car runs better with it disconnected your MAF is broken.

As above.

Is your EML light on? What makes you think there is a problem?

I think you can check it with vcds but not sure how?

I disconnected the Maf plug it through on the light does this mean it's workin ok?

depends, mine drove the same with the maf plugged in or unplugged. No lights when it was in. Think if its the same or better with it unplugged its knackered.

I disconnected the Maf plug it through on the light does this mean it's workin ok?

Not necessarily. How did the car drive with it unplugged? As Medivac has stated below if it's the same or better then its time for a new one.

depends, mine drove the same with the maf plugged in or unplugged. No lights when it was in. Think if its the same or better with it unplugged its knackered.

Looks like a new Maf !!!!

Looks like a new Maf !!!!

Easy enough DIY job. Some genius put together a guide here.

Cheers mate