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  1. #1
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    confused How to

    Hello,does anyone know what is a stock boost on vectra c 2.0 dti?can it be increased,is it safe .......is it worth it?thank you.

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    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

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    Fit a boost gauge, then you will know what your's is running. You can increase the boost at bottom end quite safely but at top end it might over speed the turbo and cause damage. 20% more boost upto 3000rpm should be fine as You would need to move 60% more air at 5000rpm than 3000rpm to give the same pressure, so running just 20% more pressure upto 3000rpm should be well under the turbos max working rpm.

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    Thank you for replying,do i increese the boost manualy or do i have to remap?

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    NB,i heard that it is possable to edjust a push rod on the waste gate do you know anything about that?

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    just got my new boost guage esterday........i im going to install it ,nice day

  6. #6
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    just done it!!!! It is 1.4 psi at 3000 rpm,srcond gear

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