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Author Topic: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)  (Read 13681 times)

Offline Mandy

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #15 on: February 24, 2010, 12:52:08 pm »
Thanks for the pics, golf is looking good  :happy2:

I see what you mean about the arch liners, dont think it will bother me too much...

Dropped my valance off today, slightly gave up with the smoothing over! They said they'll primer it and smooth it some more before spraying it. Asked for bottom half to be matte black, dunno if it'll look right  :confused:

Cos we know the owner, he's goona get my exhaust sorted and fitted too!  :happy2:

Might try out my camera skills in a mo...
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Driving: Tornado Red MK7 GTD, BMW 330e
Drove: Rising Blue Golf 6R, Reflex Silver Edition30 No.1684, Tornado Red Mk5 Golf GTI

Offline B3n

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #16 on: February 24, 2010, 01:28:59 pm »
Its ok :happy2:
When it comes to the centre section i would leave that as it is textured or have you already sanded it?
If you have sanded it matt black would look cool :happy2:
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Offline paulk

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #17 on: February 24, 2010, 01:34:04 pm »
defo worth doin...the cars look so much better with the twin pipes....cant wait to see it finished
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Offline Mandy

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #18 on: February 24, 2010, 01:36:08 pm »
Quote from: B3n on February 24, 2010, 01:28:59 pm
Its ok :happy2:
When it comes to the centre section i would leave that as it is textured or have you already sanded it?
If you have sanded it matt black would look cool :happy2:

Yes i went to work on it... had a slight mark that bugged me!

Bit of a newb. question but how do i upload pics on here like you did?? Thought it was just simply copy n paste, lol!
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Driving: Tornado Red MK7 GTD, BMW 330e
Drove: Rising Blue Golf 6R, Reflex Silver Edition30 No.1684, Tornado Red Mk5 Golf GTI

Offline Mandy

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #19 on: February 24, 2010, 01:37:18 pm »
Quote from: paulk on February 24, 2010, 01:34:04 pm
defo worth doin...the cars look so much better with the twin pipes....cant wait to see it finished

Me neither, will keep you posted... (would be a good start if i could actually upload pics!)
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Driving: Tornado Red MK7 GTD, BMW 330e
Drove: Rising Blue Golf 6R, Reflex Silver Edition30 No.1684, Tornado Red Mk5 Golf GTI

Offline paulk

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #20 on: February 24, 2010, 01:38:43 pm »
you need to use some thing like photo bucket ...
http://register.photobucket.com/
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Offline Mandy

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #21 on: February 24, 2010, 01:49:31 pm »
Quote from: paulk on February 24, 2010, 01:38:43 pm
you need to use some thing like photo bucket ...
http://register.photobucket.com/

Ok, i'll give that a go... thanks!  :happy2:
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Driving: Tornado Red MK7 GTD, BMW 330e
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Offline B3n

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #22 on: February 24, 2010, 01:52:31 pm »
Quote from: mandy71185 on February 24, 2010, 01:36:08 pm
Quote from: B3n on February 24, 2010, 01:28:59 pm
Its ok :happy2:
When it comes to the centre section i would leave that as it is textured or have you already sanded it?
If you have sanded it matt black would look cool :happy2:

Yes i went to work on it... had a slight mark that bugged me!

Bit of a newb. question but how do i upload pics on here like you did?? Thought it was just simply copy n paste, lol!

Have a read of this
http://www.mk5golfgti.co.uk/forum/index.php/topic,946.0.html
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Offline Mandy

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #23 on: February 24, 2010, 02:06:26 pm »
Front view:


Side view:


Rear view at the mo...


Will hopefully look better in a week or so!
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Driving: Tornado Red MK7 GTD, BMW 330e
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Offline B3n

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #24 on: February 24, 2010, 02:17:13 pm »
Looks good cant wait to see the back when its finished its gona make a big difference!
Great choice in wheels though :wink:
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Offline Mandy

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #25 on: February 24, 2010, 02:19:03 pm »
Quote from: B3n on February 24, 2010, 02:17:13 pm
Looks good cant wait to see the back when its finished its gona make a big difference!
Great choice in wheels though :wink:

Excactly my thoughts when I see yours!
I've always loved the Charlestons!  :love:
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Offline jmspear

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #26 on: February 28, 2010, 12:07:13 pm »
I did exactly this on my old GT TDI, I bought a GTI box on ebay they come up regulary as people always changing for aftermarket, from memory think I got it for ~ £50 in mint condition. Then I took off the old box and the mid section pipe. This needs to be laid next to the GTI box as the lengths are different (as are the pipe diameters) I cut the TDI mid section pipe to fit the GTI box and bought a reducer connector (from halfords I think, they are about a couple of quid or get one from your local kwik fit or similar) then the GTI box fits straight onto the TDI hangers, perfect fit, connected up with the reducer. I fitted the GTI valence (didn't paint it and jobs a good one. The sound was prefect as was the fit, quality, etc and best of all the price was really cheap.

Really good cheap mod, don't see the need for any expensive milltek back box (or similar manufacturer)..............
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Offline Mandy

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #27 on: February 28, 2010, 08:48:12 pm »
Hi, thanks for that info.

Few days ago, I dropped my gti valance off at my mate's garage to be primed/sparayed etc...
He told me to get hold of a reducer and clamps etc then he'd fit the back box for me when the valance was ready to go on...

Went to Southern Exhaust for starters, explained that I needed a reducer for Ed30->gttdi, asked for my reg. etc but they didn't have a clue about the sizes so were basically useless...
Went to TyreShops/Exhausts, again explained my situation, they lifted the car up... The bloke there had no idea either, said he'd only know if he cut and fitted it all there and then. I couldn't have it done tho cos valance not changed yet, so still got nowhere!
I asked in VW if they could tell me the pipe sizes, answer was no.

Told my mate that I had no luck, in the end he just said leave it to him and he'd do all of it at his garage(valance+exhaust), he couldn't believe it either that it was so much trouble just to get a reducer! I didn't think it would be this hard and cant understand why nobody seemed to know the size.
 
Dont suppose you can remember the size of the reducer you used? I'm not sure if the GTi exhaust and ED30 would be the same size anyway...


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Offline jmspear

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #28 on: March 01, 2010, 07:53:34 am »
No sorry don't remember the size, I basically measured the new gti back box section and the old TDI section before I took the old exhaust of the car. I think the ed 30 is even wider than the gti.
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Offline Mandy

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Re: how to change cat back/back box on gttdi for a gti one (for twin tailpipe looks)
« Reply #29 on: March 01, 2010, 01:39:28 pm »
It does look noticeably wider  :confused:

How did it sound when you had the gti back box on there, any different to before?
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Driving: Tornado Red MK7 GTD, BMW 330e
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