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Co1

Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3616

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?

22nd Mar 2019 7:25am

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7687

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 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop

22nd Mar 2019 8:07am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 19578

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. Diesel$ Live$ Matter. ⛽️🛢️👨‍🔧🧰⚙️ RED, WHITE & BOOST! 🇬🇧

22nd Mar 2019 12:15pm

Thon

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

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 ....

Click image to enlarge

Click image to enlarge

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.

22nd Mar 2019 3:53pm

Co1

Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3616

Cheers.

22nd Mar 2019 4:57pm

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