Originally Posted by
kentish_bloke
To be honest, i have no experience with the diesel Vectra, but i'm sure someone else will correct me if i'm wrong.
The airbox mod is the removal of the trumpet part in the lower part of the airbox, underneath the actual air filter.
I got my K&N filter from another member on here for approx £40, but if you have a trawl on ebay im sure you can find one for a similar price & youll never have to replace it while you own the car, it only needs cleaning approx every 50,000 miles!.
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