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Co1



Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3675

United Kingdom 2013 Defender 90 Puma 2.2 HT Loire Blue
Centre box removal!
My centre box is mostly rust, so needs replacing. I see a few people replace it with a straight through pipe, is there any performance improvement to be had by doing this in its own, or is it just a cheaper way of replacing this section of the exhaust?
Post #764775 22nd Mar 2019 6:25am
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8030

 2011 Defender 110 Puma 2.4 USW Stornoway Grey
it certainly makes it louder which is not great.

personally i think on a remapped vehicle it makes for a small gain in pickup. dont know on standard map not tried it. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #764778 22nd Mar 2019 7:07am
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20371

United Kingdom 
Yes, it’s worth doing helps gasses exit faster with less restriction.

Don’t expect wonders though, there isn’t much gain. You do however not have the ‘lump’ of a centre box under there vulnerable any more or the weight. $W33T $0U7H3RN $UG4R
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Post #764810 22nd Mar 2019 11:15am
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Thon



Member Since: 22 Nov 2015
Location: Salisbury Plain
Posts: 696

United Kingdom 
I have used a straight-through pipe on my 110 since I spent a day with JST's on his land, which thoroughly did for my old centre box. Pretty awful design to allow it hang below the chassis members ....


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Noise increase is very minimal and certainly not obtrusive on my truck at least. I don't have carpets or any additional sound insulation.

I haven't noticed any power increase but then mine is bone stock standard map.

The Terrafirma pipe I used is stainless and fits well - looks like it will last well too.
Post #764838 22nd Mar 2019 2:53pm
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Co1



Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3675

United Kingdom 2013 Defender 90 Puma 2.2 HT Loire Blue
Cheers.
Post #764847 22nd Mar 2019 3:57pm
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