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Thread: Z20net dump valve Help!!!!

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    Default Z20net dump valve Help!!!!

    Z20net dump valve? Anyone? 2.0t signum please any part numbers or anybody got one ?
    Last edited by bigmac; 5th July 2010 at 17:01. Reason: Maybe saying what you need help with will actually help

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    Regular Member Jezzy's Avatar
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    Just for the sound, I presume? The engine already has a turbo bypass valve, that does the same job as a dump valve but in a much more elegant way (instead of dumping boost it uses it to keep the turbo spinning whilst still bypassing the cylinders).

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    Ex Vec-C Admin Deztroyer's Avatar
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    there are several members who do have them fitted - but if you get it wrong then you will induce engine faults - have a search and you will find there is a how2 .. the other option is a cold air intake which will provide less issues (providing its not a K&N) and you will hear the recirculating dump valve already fitted working as well as the turbo spooling

    0-Large smile ......every time it's driven

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    Regular Member Jezzy's Avatar
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    The other option is to purse your lips and exhale rapidly through them.

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    Vehicle : Vauxhall Astra-J

    Trim : Elite

    Engine : 2.0 CDTi

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    If you want to draw attention to yourself, why not just put a red/white flag on your car?

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    i have one fitted matey , manufactured by forge motorsport. about 140quid give or take, various ebay sellers and websites, just google "vectra c dump valve"

    forge also sell the kits direct from their website but are usually moe pricey


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    i wouldnt put a red and white flag on my car as i am not english! cheers do you know what boost the turbo runs and and if the boost can be turned up without changing the internals of the engine? e.g. conrods pistons ect? and what is the sound of stock exhaust on them ? ( as you might gather havent purchased one yet) and what is the lag like? what is the rev range of thy turbo? so0 many questions so little answers! o and thanks for advice already.

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    Full Member ROCKATANSKY's Avatar
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    The Z20NET is like 'soft' turbo (as used in the Saab 93) and not a 'kick you in the head' turbo engine like the LET. The exhaust burbles away at idle but that's about it. Turbo kicks in from around 2.5k rpm. Really don't think you can up the boost mechanically/manually as it's all ecu controlled. There are a few tuners to remap/chip it to get around 210 bhp, but don't expect a massive amount of support for the engine. Tuners only seem interested in the VXR vauxhall stuff

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    Regular Member Marcosuk's Avatar
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    Mine holds boost around 8-9 psi standard form.. Turbo spools up about 1.5k revs

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