Author Topic: TCR muffler on GTI performance  (Read 7689 times)

Offline gixerste

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Re: TCR muffler on GTI performance
« Reply #10 on: 10 January 2021, 07:17 »
I've had the TCR back box on for a few month now and  :rolleyes: and I'm happy with it, not over the top but deffinatley sounds better.
Indium grey D.S.G. Mk7.5GTI pp

Offline Pchende

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Re: TCR muffler on GTI performance
« Reply #11 on: 29 May 2022, 23:16 »
Does anyone have the correct part number for the Tcr backbox. Had a look on ECP and nothing came up. I have a 2018 Mk7.5 Gti which I want to upgrade.

Thanks in advance.

Offline LSBristol

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Re: TCR muffler on GTI performance
« Reply #12 on: 01 June 2022, 15:39 »
It's 5G6253609ED.

Same code for either a TCR or Leon Cupra rear box as they are identical.
mk7.5 non-PP, Indium Grey, manual

TCR backbox
Bola B16 19" in crystal sylver
DTUK pedalbox+

Offline symonh2000

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Re: TCR muffler on GTI performance
« Reply #13 on: 02 June 2022, 09:50 »
This is a good thread, I would like tio upgrade the box on my 2016 GTI with performance pack too.

Which would I need?

Thanks in advance. :)
Golf GTI 7 PP
BMW M140i

Offline Watts

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Re: TCR muffler on GTI performance
« Reply #14 on: 02 June 2022, 10:18 »
The CSS back box is a popular upgrade for a MK7. Google it, plenty of chat about it and I'm sure there'll also be youtube videos too.
2019 Oryx White 5dr TCR.

Was - 2015 Tornado Red 3dr GTI PP, manual, Santiagos, Audi short shifter.

Offline symonh2000

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Re: TCR muffler on GTI performance
« Reply #15 on: 02 June 2022, 18:18 »
Excellent, thank you. :)
Golf GTI 7 PP
BMW M140i

Offline willni

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Re: TCR muffler on GTI performance
« Reply #16 on: 04 June 2022, 22:56 »
Is there a different clamp required or can we use the existing one? Planning on ordering from VW on monday.
Mk7.5 GTI - Performance Pack, DSG, Sunroof, Dynaudio, Pro Nav, Vienna Leather, Climate Windscreen & last of the 3 doors....Many Sets of Alloys...

Prev - Mk7.5 White Silver, Vienna Leather, Sunroof, Helix Sub, Many Wheels

Follow my 7.5 build on the forum https://www.golfgtiforum.co.uk/index.php?topic=287596.msg2638666#new or on Instagram https://www.instagram.com/willy_gti7.5pp/

Offline LSBristol

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Re: TCR muffler on GTI performance
« Reply #17 on: 08 June 2022, 22:48 »
Depends on year. My 2017 had same bore as the 2.5" TCR backbox so clamp 1K0253141AA works and is the VW standard way of replacing a backbox. However I believe sometime in 2018 they went to 2" bore and so you need to weld or get a reducer clamp.

There is no "existing" clamp as the stock exhaust needs cutting.
mk7.5 non-PP, Indium Grey, manual

TCR backbox
Bola B16 19" in crystal sylver
DTUK pedalbox+