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Thread: rear box or front pre cat

  
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    eacyep astra's Avatar
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    rear box or front pre cat

    Hi all,

    please advise, should i get the front cat removed or sports rear box for my astra coupe turbo?

    Thanks

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    your see more gain with precat- decat pipe , then get a cat back system

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    KFC...mega bucket

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    thats no contest, the precat shud be one of 1st mods you do on zlet.

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    Agreed! Pre-cat makes a noticable difference.
    Black Astra Coupe Turbo

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    Not meaning to hijack the thread but once a precat is purchased what do you actually need to fit it? I have a vxr cat section ready to fit a precat decat to so i can fit it to my coupe turbo. Can anybody let me know what type of gasket if any is requred and also how difficult is it to get the precat decat connected tot he turbo? Worth buying a new clamp for that part or will a 04 plate with 40k on the clock be ok to have its existing turbo clamp re-used? Wanting to get mine fitted in the next few weeks as im sure it cant be that hard but as it stands at the minute with my current knowledge i am tempted to pay a garage to do it..... as im not loaded though doing it mysefl is more appealing if possible!

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    i have done the same ....used a vxr cat section, original clamp 3x bolts and a new precat to cat section gasket about £20 from vx

    04 cab aswell

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    do both sounds good and you will feel the difference.
    sold the gsi and got a 2008 sri mk5 now in black

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    Jumping on the bandwagen, the precat is the best first mod for the zlet imo
    Never happy, always wanting more!

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    agree as I have just done it

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