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Thread: 1.6 8v to a 2.5 V6! How to make it quieter!

  
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    Nashy's Avatar
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    1.6 8v to a 2.5 V6! How to make it quieter!

    So, I went to visit a 2.5 V6 Vectra in Wales - long story, but the seller ended up falling in love with my Astra and we ended up part exchanging!!
    I do miss the astra on the handling and size front, as this vectra is an absolute bugger to park and manouvre! But the power is nice

    Anyway, it's got a very nice induction kit and de-cat GSi exhaust setup, but she is too loud! I took it to my regular garage who are performance specialists and they said the exhaust would only make a little difference on the sound as would the induction kit. I'm sure most of the noise is coming from the exhaust, although the garage said it's mainly the V6 engine making it!

    So, is the 2.5 V6 engine really that loud!? Or is it just me?
    I'm too used to my quiet little 1.6 purring away

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    put the cat back in, it will quieten it down a bit, then more of that fuzzy stuff they put in the silencers to deaden the sound will also help. If it was me I would leave it as I love the roar of V engines
    Quote Originally Posted by Ffoeg View Post
    It has happened in the past , but I do try to be discrete but a 'poo with a view' is one of life's simple pleasures IMO
    Quote Originally Posted by Craig View Post
    i have owned two fannys that have blown smoke

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    Sounds awesome when I boot it - but driving around town and on motorways is a little too noisy. The garage thought it sounded nice and were sure it was just the V6 engine but there are other V6 engines in cars that don't rumble and grumble around at low revs and certainly don't make as much noise at higher cruising speeds. Maybe it is the decat.

    I'm sure many a car enthusiast will appreciate the sound of the V6 but I'm worried it sounds too much like a small engined car with a corking great wide bore exhaust stuck on the back - i.e. CHAV

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    a v6 does not sound "chav" it has a different sound to a 1.0ltr shitbox with a 5" backbox, more soul and a different note entirely, just get another silencer put into the exhaust for the cat back in to quieten it down and then just listen the roar
    Quote Originally Posted by Ffoeg View Post
    It has happened in the past , but I do try to be discrete but a 'poo with a view' is one of life's simple pleasures IMO
    Quote Originally Posted by Craig View Post
    i have owned two fannys that have blown smoke

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    if people look at you thinking big exhaust, big noise fake engine (ie.1.1) just put your foot down that will show em
    Thought i would get a new motor for the missus........................... it would be a great swap!

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    dont think a v6 could ever sound CHAV as u put it

    bloody glorious tone IMO

    as already said tho a cat would be good idea or maybe just some better sound proofing so as not to compromise the performance side of things.

    is it a proper de-cat (ie most likely MOT fail) or is it a sports cat?



    sounds a good swap tho - wouldnt mind doin the same swap myself - well actually id settle for just the engine.

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    wayneGSI's Avatar
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    my dads sounds awesome it is quite loud though as std
    Astra GSi Turbo
    dap-performance.co.uk
    Live in the East Midlands?

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    The induction kit will most likely be making a lot of noise. It did make a difference when i fitted one on my cavalier (although it wasn't a V6)

    Get a standard air box on and it'll help

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    A neighbour of mine has a Veccy GSi, and i can hear him coming and going from the estate, from in my house. But it's not been modified in anyway. It's just standard. They're just quite loud in general.
    Mk5 Astra 888 CDTI No.58
    "you can’t help but drive the 888 Astra hard, everywhere, constantly" - Evo Magazine.

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    its a loud engine. the induction kit seriously dont help. get a standard air box. dont put the cat back in they run loads better with out them. if you dont want the de cat I will swap you for my cat.

    if its a straight thourgh piupe then they are loud. but the induction kit is what makes most the noise

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