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Thread: air box mod drilled

  1. #1
    Regular Member nelly452's Avatar
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    Default air box mod drilled

    ive seen a few people on here have drilled there airbox why is that ???

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    Vehicle : Golf 7

    Trim : GTD

    Engine : 2.0 TDI 184PS

    Year : 2014

    Mileage : 40000

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    In theory it will let more air into the engine - I'm sceptical. All it will do is let the engine draw in warm less dense (and dirtier) air form the engine bay.

    It actually doens't let more air into the engine, but may release a pressure drop. Some results have shown it causes the engine to run hotter.

  3. #3
    Regular Member nelly452's Avatar
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    dont really understand it mate why would anyone wanna drill a big whole in there airbox lol , isnt the airbox mod ok itself

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    Vehicle : Golf 7

    Trim : GTD

    Engine : 2.0 TDI 184PS

    Year : 2014

    Mileage : 40000

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    Quote Originally Posted by nelly452 View Post
    dont really understand it mate why would anyone wanna drill a big whole in there airbox lol , isnt the airbox mod ok itself
    It is. tbh it's not the end of the world if you wreck I don't they are dear from Vx anyway so I can appreciate why people try in that respect.

  5. #5
    Regular Member nelly452's Avatar
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    think i'll leave that 1 lol , theres so much i want to do my my vec i dont know where to start really i will get a k&n panel filter and maybe lower it aswell but will have to refurb my alloys first , anyone on here refurbed there alloys themselves

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    Full Member gibbon7000's Avatar
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    I have drilled mine, engine temp rised by about 7 degrees. it did run smoother.

    My other car. 1972 1641cc slammed beetle. On the road finally!!

  7. #7
    Regular Member paul_sri150's Avatar
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    Quote Originally Posted by gibbon7000 View Post
    I have drilled mine, engine temp rised by about 7 degrees. it did run smoother.
    as did mine, runs around 90 degrees (1.9 cdti 150) town driving, but no difference on motorway

  8. #8
    Regular Member Chris SRi's Avatar
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    I thought people did it for more induction noise as well? Gives nearly the same effect as having an induction kit.

  9. #9
    Ex Vec-C Admin Ian-Highlander's Avatar
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    Vehicle : Insignia Tourer

    Trim : Elite

    Engine : 2.0 CDTI (160ps)

    Year : 2010

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    I drilled mine, because the stage 3 map has turned the boost up on the turbo so much the airbox was strangling it at top end revs, drilling holes allow the turbo to suck that extra air through as required that it can't get through the single opening (not just my imagination this has been rolling road proved).

    Should be noted though that this ONLY affects the very top end of the rev range and ONLY affects tuned/mapped cars. Why do you think Vauxhall put an extra hole in the VXR airbox?

    Edit: as per Howards post below, zero effect on the temps but a noticeable difference in kick at the top end of the rev range.
    "Doing a good job here is like wetting your pants in a dark suit, you get a warm feeling but nobody else notices"
    Maptun Tuned 2.0T Estate - click HERE for mods list.
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    Regular Member PORKBALLS29's Avatar
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    I was prob one of the first of the later lot to drill my air box as per the VXR 280 air box mod and i've seen no raise in temp at all and the 2.8 engine bay is as hot as hell :-)

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