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Author Topic: Pre-cat. . . . . REMOVED!  (Read 91191 times)

Offline skard

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Re: Pre-cat. . . . . REMOVED!
« Reply #75 on: January 23, 2013, 11:14:32 am »
Will have a look at doing this soon on my mates ramp  :party:
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Offline Meallbhan

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Re: Pre-cat. . . . . REMOVED!
« Reply #76 on: January 24, 2013, 05:57:07 pm »
Thought I'd post up my Briskoda photo on here if it helps:

                                                                               I'm not understanding exactly how the standard exhaust separates.  You undo the four bolts at the turbo to release the exhaust, thats all good but then do you take the whole exhaust off, do you split it after the main cat, or does the pre cat come off the exhaust by itself?  I've seen a couple of photos with the precat on its own, but how does it come off?

Offline JMP

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Re: Pre-cat. . . . . REMOVED!
« Reply #77 on: January 24, 2013, 06:41:28 pm »
There's a sleeve connection between downpipe and catback. It has a couple of bolts which are usually rusted and I had to cut them to separate dp from catback. After unbolting it, you just push the sleeve over the back section and downpipe drops down.

Offline Meallbhan

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Re: Pre-cat. . . . . REMOVED!
« Reply #78 on: January 24, 2013, 07:05:35 pm »
Thanks, I have seen the sleeve connection after the main cat (towards the back of the car, where you would put a cat back system on).

So the whole front section has to come off like in the pic above and its not possible to remove the precat by itself?

I suppose some exhaust paste would be a good idea when putting the sleeve back together?

Offline GTI-Ross

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Re: Pre-cat. . . . . REMOVED!
« Reply #79 on: January 24, 2013, 07:06:52 pm »
There's a sleeve connection between downpipe and catback. It has a couple of bolts which are usually rusted and I had to cut them to separate dp from catback. After unbolting it, you just push the sleeve over the back section and downpipe drops down.

Yeah the DP and Main cat is one section, (quite long, bad design) so take it al off, then just knock out the pre- cat, these is pics of mine.





Good luck...( you wont need it, easy as hell)
« Last Edit: January 24, 2013, 07:09:38 pm by GTI-Ross »
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Offline Meallbhan

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Re: Pre-cat. . . . . REMOVED!
« Reply #80 on: January 24, 2013, 08:14:06 pm »
All cleared up, cheers.  Wot a pain in the hoop!

Offline GTI-Ross

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Re: Pre-cat. . . . . REMOVED!
« Reply #81 on: January 24, 2013, 10:36:49 pm »
All cleared up, cheers.  Wot a pain in the hoop!

So what did your guy say, does he know what he is doing now   :happy2:
MK6 GTI CSG | Revo Stage 2 | Revo Stage 2 Intake | VWR SubFrame Mount | VibraTechnics Upper Engine Mount | VibraTechnic Transmission Mount | SuperPro Anti Lift Kit | H&R ARB's | Bilstein B12 | TT Short Shifter |Mintex M1144 Race Pads | HEL Braided Lines |

MK5 GTI - DSG + Extras (Sold because DSG was Soooo Boring !!!)


Offline 18Edition30

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Re: Pre-cat. . . . . REMOVED!
« Reply #82 on: January 31, 2013, 08:15:26 pm »
Had this done today. Awesome mod. Pulls really well higher up now, turbo spools up quicker as well

Only downside I notice is bad smell when sitting stationary for period of time, an reversing. All used to be stopped by pre cat I spose.  Anyway round this?

Offline Meallbhan

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Re: Pre-cat. . . . . REMOVED!
« Reply #83 on: January 31, 2013, 10:07:47 pm »
A bad smell as in what? Exhaust fumes?

Offline Kinks

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Re: Re: Pre-cat. . . . . REMOVED!
« Reply #84 on: January 31, 2013, 11:14:00 pm »
If its an eggy smell isnt that a sign of your main cat has gone?

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Offline Kinks

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Re: Re: Pre-cat. . . . . REMOVED!
« Reply #85 on: January 31, 2013, 11:17:18 pm »
Been looking for someone in stockport to do it but no luck! The guy at audi doctor who is fab wanted to open the pre cat up and weld back together due toxins in material? Wanted £200 to do it :-( so anyone know of anyone in the area who isnt that cautious? Ill even provide a dust mask ???

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Offline camfollower

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Re: Pre-cat. . . . . REMOVED!
« Reply #86 on: January 31, 2013, 11:23:44 pm »
Cheaper to buy a second hand Standard TBE on here, I bet there's loads about, smash it out yourself then take it to the garage.  Probably do that for a tonne all in, and an exhaust to sell on.

Offline Kinks

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Re: Pre-cat. . . . . REMOVED!
« Reply #87 on: January 31, 2013, 11:30:36 pm »
Cheaper to buy a second hand Standard TBE on here, I bet there's loads about, smash it out yourself then take it to the garage.  Probably do that for a tonne all in, and an exhaust to sell on.
Not a bad idea wonder what price they go for? although if more money is involved then might as well look into a Miltek? does anyone know if the Miltek can mate upto the standard back section :driver:?

Offline GrayMK5GTI

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Re: Re: Pre-cat. . . . . REMOVED!
« Reply #88 on: February 01, 2013, 07:24:04 am »
If its an eggy smell isnt that a sign of your main cat has gone?

Sent from my GT-N7105 using Tapatalk 2

The main cat sometimes makes that smell especially from cold. Most cars don't have a pre-cat so would have that smell anyway 

Milltek TBE doesn't have a pre-cat either so you would get that smell with that also.
« Last Edit: February 01, 2013, 07:27:51 am by GrayMK5GTI »
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Offline GrayMK5GTI

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Re: Re: Pre-cat. . . . . REMOVED!
« Reply #89 on: February 01, 2013, 07:26:09 am »
Been looking for someone in stockport to do it but no luck! The guy at audi doctor who is fab wanted to open the pre cat up and weld back together due toxins in material? Wanted £200 to do it :-( so anyone know of anyone in the area who isnt that cautious? Ill even provide a dust mask ???

Sent from my GT-N7105 using Tapatalk 2

I used ABP Motorsport in Shavington (Crewe) - Jn16 M6. It was about £60 IIRC
NOW: 2015 Golf R DSG 5 Door, Lapiz Blue, 19s, Discover Nav, Reversing Camera
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