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Thread: Issues With Precat Decat on 1.9CDTI

  1. #11
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    Right,

    Thanks every one for the help.

    After all your info, and much consideration. Also I am fairly confident that the person doing my remap is highly skilled, I am:

    *gutting the precat. leaving all lambda sensors in place.
    *Leaving the main middle cat alone.
    *Removing the middle silencer.
    *leaving the standard backbox and tailpipe.

    Mine doesnt have a DPF, so no worries about that. Then after i have finished the exhaust mods i will get the car remapped.

    Wish me luck, does this sound good?

  2. #12
    Regular Member nath-lav's Avatar
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    I fitted scorpion per-cat and noticed no difference in performance or sound..but once I removed main cat the sound was crazy and defo noticed the car spooling up quicker felt more responsive...first thing am doing again to my new vec

  3. #13
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    Vehicle : Vectra Estate

    Trim : Exclusive

    Engine : 1.9 cdti Z19DTH

    Year : 2007

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    Mega thread bump folks but clearly there are people on this forum who kow wha there talking about. So when I bought my vecy it came with a receipt from a tuners for a "software up date" and on the back hand written dfp delete, egr delete ecu remap, 30 bhp. Now I haven't even had a chance to have a good look at the car drove it back from purchase and locked it up till mot this Sat coming at my work. If the above map is legit will I be good to fit a pre cat decat, as there dirt cheap for this car. My corsa decat manifold was 260 bucks. Any help will be great guys. Can't wait to be leaving clouds of black reek everywhere. Just cal me batman ha ha ha

  4. #14
    Midlands - Head case Organiser Dog_Book's Avatar
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    Vehicle : Vectra Estate

    Trim : VXR

    Engine : Z28NEH

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    Quote Originally Posted by Hoody86 View Post
    Mega thread bump folks but clearly there are people on this forum who kow wha there talking about. So when I bought my vecy it came with a receipt from a tuners for a "software up date" and on the back hand written dfp delete, egr delete ecu remap, 30 bhp. Now I haven't even had a chance to have a good look at the car drove it back from purchase and locked it up till mot this Sat coming at my work. If the above map is legit will I be good to fit a pre cat decat, as there dirt cheap for this car. My corsa decat manifold was 260 bucks. Any help will be great guys. Can't wait to be leaving clouds of black reek everywhere. Just cal me batman ha ha ha
    No you won't.
    Vectra VXR estate 2007 Sapphire Black
    Teapot Tuned 245/300
    Eibachs B8's, fully loaded factory options

    https://www.vectra-c.com/forum/calendar.php

  5. #15
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    Vehicle : Vectra Estate

    Trim : Exclusive

    Engine : 1.9 cdti Z19DTH

    Year : 2007

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    What will be the issue or is it just a case of the map will be all wrong if there even is one one it?

  6. #16
    Midlands - Head case Organiser Dog_Book's Avatar
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    Vehicle : Vectra Estate

    Trim : VXR

    Engine : Z28NEH

    Year : 07

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    Quote Originally Posted by Hoody86 View Post
    What will be the issue or is it just a case of the map will be all wrong if there even is one one it?
    Only fit a precat decat with a hybrid as the standard turbo will over spool too quickly and go beyond its limit unless its been mapped to suite which isn't ideal anyway as the boost limit has to come in earlier to catch it.

    Have a look at the many threads in this section loads of detail and lists of what can be done. Also might be a good idea to create a signature so people know which body you have as hatch/estate/signum have different set ups as you'll know from seeing it in the parts lists so advice can change a little on the exhaust side of things depending what you have.
    Vectra VXR estate 2007 Sapphire Black
    Teapot Tuned 245/300
    Eibachs B8's, fully loaded factory options

    https://www.vectra-c.com/forum/calendar.php

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  8. #17
    Regular Member Steel's Avatar
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    Vehicle : Vectra

    Trim : SRI CDTI NAV

    Engine : Z19DTH

    Year : 2005

    Mileage : 213,000

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    Quote Originally Posted by Hoody86 View Post
    Can't wait to be leaving clouds of black reek everywhere.
    Highly unlikely it will be passing the MOT if it does these days.

  9. #18
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    Vehicle : Vectra Estate

    Trim : Exclusive

    Engine : 1.9 cdti Z19DTH

    Year : 2007

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    Helps if ya work on a garage tho

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