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Thread: help with de-cat

  
  1. #1
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    c12mgf's Avatar
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    help with de-cat

    guys can you help

    my flexi pipe has gone so looking to get de-cat just now till mot time

    was looking at these

    http://cgi.ebay.co.uk/Astra-Mk4-GSi-...item5190b19301

    http://cgi.ebay.co.uk/ASTRA-DE-CAT-E...item35a482540b


    my question is

    will i need to buy a pre-cat pipe or will these bolt on to whats already there?

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    Joereynolds89's Avatar
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    Theyll bolt onto the precat

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    so i just un bolt mine at the flexi and bolt on the de-cat in its place?

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    Assuming your car has a 2 piece CAT and not a single piece, you will be able to unbolt and bolt this in its place.

    Would it not be cheaper though just to get somewhere to wield a new piece of flexi in place + it keeps the car legal and no problems with emission lights etc

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    yer, pretty much, the bolts are actually part of the precat which you would undo, and also at the centre section side, slide that pipe in place and bolt it back up, just be aware your not going to be passing any mots with that pipe fitted and a new flexi at a local exhaust place shouldnt be anymore supplied and fitted

    EDIT: as Buckle has stated, i forgot the coupes have single peice cats...

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    yeah buckle mine does have the 2 cat.

    where can i get the right flexi from?

    what about this?

    http://cgi.ebay.co.uk/Cat-Catalytic-...item5ad1d0d2c8

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    If you search 'exhaust flexi' on ebay, there are loads of different sizes on there, costing around £30-£35 inc P+P

    Otherwise if your going to spend £300 on an OE spec CAT, you can get a sports cat for £325 from LMF
    http://www.lmfvauxhall.co.uk/store/p...at=1573&page=3

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    what size is the flexi on the coupe?

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    I think the exhaust is 2 1/4" diameter but not 100% on that. No idea on the length of the flexi

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