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Thread: pics of jap style 3" and 4" backboxes of astra mk4

  
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    ben s's Avatar
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    pics of jap style 3" and 4" backboxes of astra mk4

    basically what it says in title, any pics so i can get an idea of what they look like underneath the bumper

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    Chance for me to shine






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    are these really loud? i was thinking about replacing my irmmy double d backbox with one of these as it is quite restrictive apparently.. will it also improve performance slightly?

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    Sorry toms but i think jap boxes are a marmite situation, theres a thread about the 'chav' appeal to astras over clios and without meaning to offend it looks chavvy mate lol.

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    Quote Originally Posted by Adam_Astra_SXI View Post
    Sorry toms but i think jap boxes are a marmite situation, theres a thread about the 'chav' appeal to astras over clios and without meaning to offend it looks chavvy mate lol.
    None taken bud

    It was kind of Jap themed not long ago with jap style wheels, looking to sell the backbox soonish
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    A Jap Style Back box will,

    Look Crap
    Sound Crap
    and possibly decrease the perfoemance of your car

    If all you want is loud, then just fit a straight through pipe and have done with it

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    Quote Originally Posted by HERC View Post
    A Jap Style Back box will,

    Look Crap
    Sound Crap
    and possibly decrease the perfoemance of your car

    If all you want is loud, then just fit a straight through pipe and have done with it
    Hmmm

    Beg to differ to be honest with regards to performance and sounds all right

    Seeing as though my 1.4 16v was rolling roaded with this setup at 107.4bhp and 115.6ft lb torque...
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    and standard they are?????

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    Quote Originally Posted by HERC View Post
    and standard they are?????
    About 90bhp and about 100ft lb torque
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    So you managed to get 17BHP and 15ft lb torque from an exhaust alone.....


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