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Thread: pre cat is on and ...

  
  1. #1
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    rob_582's Avatar
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    Smile pre cat is on and ...

    got round to fitting my precat yesterday and a second hand normal gsi cat as my coupe had the all in one type with the pre and normal cat joined. after getting it off found that the pre cat was smashed up in to loads of pieces and the main cat rattled as well. So on with the new cat and precat 20mins later still messing about with the stupid clamp. got it all sealed and off for a drive. and WOW what a difference the noise has got deeper and louder and my car feels fast again alot smoother alot more power so i suggest anybody who has not got one on there car go buy one NOW!!!!
    Astra Coupe Turbo

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    rhys57's Avatar
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    Its one of the first and best mods to do mate, Ive got one to go on my Zaf soon.
    Vxr turbo with 360 bearing and twin oils seals & Evoms dv. Cdti airbox 63mm tophat.Milltex cat back and pre cat.. Regal 245 leh phase 1 ipf remap.Whiteline rarb.

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    montyfox's Avatar
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    Essential first mod

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    LOCKO's Avatar
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    yep as above shame i waited 14 months till i got one fitted

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    Definatly a good mod to do. Fit a FMIC next as thats even better

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    bhalay207's Avatar
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    going to souns dtupid but whats a pre cat and would something like this benifit a 1.8?

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    vauxtillidie's Avatar
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    you wont have one a 1.8, z20let has 2 cats pre and main, removing the precat pipe frees up some power and wont fail an emissions test
    2006 Astra VXR, Flame Red, 19's, AFL, Cruise Control, CD70 + Aux in, CID, Bluetooth, Powerfold Mirrors, DDS/TPMS, Sight & Light, Check Control, Speed Locking

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    yeah fmic is next to go on just looking at buying one now then off to red dot i thinks
    Astra Coupe Turbo

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    M4rkyT's Avatar
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    I'm thinking of doing this and also removing the main cat and going straight through. I already have a 3" cat back system so will just be a case of pre-cat and cat removal.

    Is this a worthwile idea and has anyone else done this?

    Thanks

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    MrStush's Avatar
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    Precat Decat FTW...... Ask anyone that has one!.... Right LOCKO.. Right Vauxtillidie!!....
    Star Silver SRI Turbo..'Red.Dot Reloaded'..Cybox Precat, Cybox Catback SS Exhaust..K&N Panel Filtered...9Ltr EDS SMIC!!.....

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