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bell-auto-services

Member Since: 08 Jul 2007
Location: North Yorkshire
Posts: 2233

2013 Defender 110 Puma 2.2 USW Orkney Grey

Personally unless the car is tuned within an inch of its life and is not used for what would be classed as normal driving id lease it alone. I have found that a centre cylincer removal but with a small box in and some air box modifications will give a better gain that the decat does.

Pete

15th Jan 2013 11:35am

BruceT

Member Since: 01 Nov 2010
Location: South Africa
Posts: 518

And the heat issue? "Overlanding With Bruce" - Youtube https://www.youtube.com/@OverlandingwithBruce
11MY Defender 130
23MY Defender 110 D300 HSE X-Dynamic

https://www.youtube.com/channel/UCzrHKcjA-LJ470_H4QwPgVA

15th Jan 2013 11:38am

bell-auto-services

Member Since: 08 Jul 2007
Location: North Yorkshire
Posts: 2233

I didnt measure cabin heat on the 2 setups.

pete

15th Jan 2013 11:46am

BruceT

Member Since: 01 Nov 2010
Location: South Africa
Posts: 518

Thanks Pete "Overlanding With Bruce" - Youtube https://www.youtube.com/@OverlandingwithBruce
11MY Defender 130
23MY Defender 110 D300 HSE X-Dynamic

https://www.youtube.com/channel/UCzrHKcjA-LJ470_H4QwPgVA

15th Jan 2013 11:49am

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8172

2011 Defender 110 Puma 2.4 USW Stornoway Grey

Pete, can you shed some light on the air box mod? Cheers

James
110 2010 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

15th Jan 2013 11:51am

Naks

Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2661

2010 Defender 90 Puma 2.4 SW Alpine White

One thing that Pete is not aware of is how bad our diesel is.

IIRC, diesel in the UK is <10ppm?

We are still on 500ppm with 50ppm in major cities only, so that's a factor to consider --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged

Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ

15th Jan 2013 1:52pm

pepekleinhans

Member Since: 12 Jan 2013
Location: Cape Town
Posts: 25

bell-auto-services wrote:
Personally unless the car is tuned within an inch of its life and is not used for what would be classed as normal driving id lease it alone. I have found that a centre cylincer removal but with a small box in and some air box modifications will give a better gain that the decat does.

Pete

Very Interesting Pete, you have made alot of us thinking now, and also re-thing of our plans.

Thank you very much for the info

Cheers
Pepe 2005 Discovery 3 HSE
2007 2.4 Puma Defender
1976 series 3 with Ford V6 engine

15th Jan 2013 2:48pm

pannawonica

Member Since: 21 Nov 2010
Location: Clackline Western Australia
Posts: 568

The heat issue is considerable, I cannot bear my hand on the back of the seat box when travelling to the shops, this was only on a 47C day.

16th Jan 2013 1:36am

BruceT

Member Since: 01 Nov 2010
Location: South Africa
Posts: 518

pannawonica wrote:
The heat issue is considerable, I cannot bear my hand on the back of the seat box when travelling to the shops, this was only on a 47C day.

yes we get those temps in some areas in Southern Africa also so I can relate. Even the aircon stops working. This is the main reason I would like to do a decat. "Overlanding With Bruce" - Youtube https://www.youtube.com/@OverlandingwithBruce
11MY Defender 130
23MY Defender 110 D300 HSE X-Dynamic

https://www.youtube.com/channel/UCzrHKcjA-LJ470_H4QwPgVA

16th Jan 2013 5:33am

pannawonica

Member Since: 21 Nov 2010
Location: Clackline Western Australia
Posts: 568

I plan while I'm at the decat to lag the downpipe and centre box replacement. However I have read somewhere that stainless does not like to lagged and that it cracks, mild steel lagged, corrodes at a increased rate.

16th Jan 2013 8:45am

WelshGas

Member Since: 01 Oct 2010
Location: Vale of Glamorgan
Posts: 935

2010 Defender 90 Puma 2.4 XS CSW Santorini Black

Lagging would retain heat. What about an insulated heat shield between exhaust and underside

LANDYWATCH

Neighbourhood Watch for Land Rover Owners

http://www.landywatch.co.uk/smf2/index.php

16th Jan 2013 5:36pm

pope10001

Member Since: 15 Oct 2011
Location: Dulverton
Posts: 489

1992 Defender 90 200 Tdi HT Zermatt Silver

I removed my cat about two years ago and have had no problems whatsoever. Living in a hot country, as I do, it made a huge difference not only to cabin temperatures but also reduced the engine temp as well.

When I contacted BAS asking if I could get one of his tunes and upgraded turbo's and I explained what I had done to the 90, I received a rather dismissive email back telling me that I had should never have removed the CAT and asked "who told you to do that?" The tone of the email was not impressive, needless to say someone else got my business.

16th Jan 2013 6:49pm

pannawonica

Member Since: 21 Nov 2010
Location: Clackline Western Australia
Posts: 568

[quote="pope10001"]I removed my cat about two years ago and have had no problems whatsoever. Living in a hot country, as I do, it made a huge difference not only to cabin temperatures but also reduced the engine temp as well.

This is the result that I'm hoping for, when you consider how the Cat works by absorbing heat this would be the expectation. Hold one up to the light and you cannot see through them, not good for gas flow and heat removal !

17th Jan 2013 9:12am

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