I'm off to pick up a new pollen filter for the car shortly. I have three options

1) Vauxhall one @ £24
2) Mann one at £14
3) Unipart one at £9

Whats the difference between the above. Surely a filter is a filter regardless?

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Hi,
just got a bit of a mystery when i went to the dealers.
His card reader says my Astra is 92kw, but my registration says its 81kw.
How can I physically tell the difference?

Thanks!

Hi all,

I've noticed my 2011 Astra elite seems to have different colour shades on the rear doors. In some lights it doesn't notice but in broad daylight it really stands out. Any ideas on what this could be?
  
Can't seem to post a photo as it says file too large?

Was looking to update my nav maps and it seems there's an incompatibility between different versions of the DVD800 system. According to the 10th position in my VIN my car would be fitted with a 'MY2009' version of this system, for which the most recent maps are tagged 14/15. For the MY2010-2011 version there's a 16/17 update available.
Now I was wondering how these differ and if the MY2009 version can be 'updated' so that it gains compatibility with newer maps. Anyone know?

I'm considering buying an Astra GTC and have found one that ticks most of the boxes, however I have just noticed that it is the 1.4 118 bhp model not the 138 bhp. What is the difference between the two engines? Is it physical or software? Could I still eventually achieve the same power output with tuning mods?