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Thread: Fitting a K&N panel filter

  
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    redror's Avatar
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    Fitting a K&N panel filter

    Hi, I've just ordered a k&n panel filter for my 2002 1.7 dti van, I was also goin to drill the air box and was just wanting to know roughly the size and how many holes would be sufficient also after i have fitted it do i need to alter anything else so as it runs fine ie fuel air mix etc. Sorry if this has been covered already,
    Thanks

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    StevesAstra's Avatar
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    Obviously you don't have to take notice of this BUT...................

    I wouldn't drill the airbox, when you remove the filter you will see 2 tubes (one in top part and one in bottom) remove these and also buy yourself a veccy pipe (search it, theres loads of threads on it and even a tutorial)

    Alot better than drilling the airbox.

    The car won't run rich or lean or anything like that as the ecu will re-adjust mixture.

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    redror's Avatar
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    Hi, thanks steve for the info, getting it remapped tonight so hopefully should be a bit better,
    ta

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    I de-restricted my airbox and drilled it. It makes the diesel sound better IMHO.

    I basically used quite a large drill, the flat blade type drill bits, about 1/2" or something and made the airbox look like swiss cheese. Remember, ONLY DRILL BELOW THE FILTER, NOT ABOVE!

    I also ran a cold air pipe from the grill along to infront of the airbox to feed cold air into the holes to reduce the risk of heat seepage. Not had any problems at all. Now sounds more growly if you know what I mean.
    No longer an astra owner

    Now a Vectra owner

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    ssa17WS's Avatar
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    /\/\/\ LOL!!! /\/\/\

    please do not follow this advice....

    weather you drill holes on the top or bottom there is still holes withing the engine bay to promote warm air getting into the car,

    even if you have fed a piper to it, the car can only consume air which is required into the engine therefore idle air around the air box will be warming up and then getting sucked into the car.

    to prevent this you would need then to attach the feed pipes to the holes in the end making the holes you drilled pointless.....

    sorry had to break that to you..

    Steve
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    rburgring - 10:55

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    rhys8989's Avatar
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    dont drill it !!!!!!!!!!

    ^^^^^^^^^^^^^^^^^^^^^

    good advise
    Z18xe-VXR Brakes-319cc redtop injectors-Knife edged-samco top hat with VXR air scoop-gsi wheels-lowerd 100mm coilys--s/s powerflow-corteney sport filter LUK Fast RoadClutch

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    dont drill it and if you do use a hole saw so it doesnt look like its been under fire from a machine gun, get a sealed induction kit no heat soak better air flow

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    that's funny i have no problems with heat soak at all. So can't be all that bad.
    No longer an astra owner

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    you wont have problems coz really all it does is affect your performance.

    take your car down to Extreme Motorsport in whitburn and pay to get your car rolled and test your cars performace with and without the airbox mod, and you'll be suprised.

    Steve
    Astra VXD
    rburgring - 10:55

    Scottish Region

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    bassman9878's Avatar
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    and also wait for the warmer weather than we have got now

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