http://www.corsasport.co.uk/board/viewthread.php?tid=73970 simple!! If your worried about warrenty, grab another air box from a scrappy and that way if you have to have any work done just swop them over before you take it in!! Jobs a good 'un :thumbs:

only if it caused a fault then it would i think, on its own i dont think it would

will this void your warranty? as i have 3 years ;x

What ever you do DO NOT drill any holes on the engine side of the filter,Only drill before the filter else the engine will suck in unfiltered air which is very bad!
As previous said,drill the left hand side(nearest the wing)and the bottom of the box.Dont drill the right hand side as it will suck hot air off the engine which you dont want.
Nothing will be damaged as long as you dont drill the engine side of the filter.
On most vauxhalls drilling the airbox and fitting a performance element is as good as if not better than an induction cone filter.
Dave

cheerz for the help...

now lets see if i can find the garage keys

or drill alot of 20mm holes instead of a few large ones and u get a different sound

doesnt this damage anything..

can u give me a little more detail on how to do it....

eg what size holes would u recommend. etc etc

it improves the sound of the car without shelling out on say an induction kit for example, all u do is the box that the air filter is housed in, you drill some large holes in the left hand side and underneath simple as that really hope that helps ya

some people do this instead of using an induction kit. it is as it says, drilling holes in your air box. its done to try to reduce the restrictiveness of the enclosed airbox by allowing more in. wez has had it done i think

what the heck does this mean, and what is it meant to improve.