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Porny
Site Sponsor

Member Since: 31 Aug 2009
Location: Sutton Coldfield - West Midlands
Posts: 809

Lol.... just for fun (and during testing of speed limiter)

2.4 Tdci Puma.

- this in it's latest guise, though will be on the dyno again soon.

A rolling road is a useful tool when it comes to proving what power/torque the vehicle actually makes, and it helps when you can hold a vehicle at a set speed and fully load it - which is a massive help when looking at turbo control.

Ian IRB
The home of the first modified Keswick Green 90 - and the first 2.4 Puma through both the 200bhp and 550Nm barriers.

www.IRBdevelopments.com

www.facebook.com/irbdevelopments

www.integrated316.com

www.facebook.com/integrated316

14th Jan 2013 10:56am

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8029

2011 Defender 110 Puma 2.4 USW Stornoway Grey

Naks, can you keep us posted on how you get on once you have taken the CAT out. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

14th Jan 2013 2:40pm

pepekleinhans

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

Wow Porny, that is awesome, thanks very much for this, you guys have done great stuff on the 2,4.

Know I just need to get mine done.

Thanks very much

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

14th Jan 2013 3:10pm

pepekleinhans

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

Naks wrote:
Regard wrote:
And since there are less traffic cops on this site compared to the local site......I will admit that I have once tested it and yes, I also did 160 odd Km/h.

I was deaf for about 3 hours afterwards though.....

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

14th Jan 2013 3:12pm

Naks

Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638

2010 Defender 90 Puma 2.4 SW Alpine White

jst wrote:
Naks, can you keep us posted on how you get on once you have taken the CAT out.

Yep, will definitely do. Landy is booked in with my indie on 25th Jan to remove the cat.

I'm in two minds about removing the centre silencer box as well... --
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

14th Jan 2013 4:21pm

K9F

Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey

I removed the cat and the rear box in lieu of the centre one. If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!

14th Jan 2013 4:42pm

BruceT

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

Regard wrote:

And since there are less traffic cops on this site compared to the local site......I will admit that I have once tested it and yes, I also did 160 odd Km/h.

I was deaf for about 3 hours afterwards though.....

@ Regard "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

Last edited by BruceT on 15th Jan 2013 8:58am. Edited 1 time in total

15th Jan 2013 6:39am

Naks

Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638

K9F wrote:
I removed the cat and the rear box in lieu of the centre one.

Ok, but the centre box imposes more restrictions than the rear box, I'd rather get rid of the most restrictive stuff? --
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 6:47am

BruceT

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

Naks wrote:
K9F wrote:
I removed the cat and the rear box in lieu of the centre one.

Ok, but the centre box imposes more restrictions than the rear box, I'd rather get rid of the most restrictive stuff?

Agreed do the centre box Naks..... "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 6:49am

Naks

Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638

BruceT wrote:
Agreed do the centre box Naks.....

Yeah, I think I will. And I will keep the silencer. This way if SWAMBO complains about the noise, I can refit it without her finding out what I did

--
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 6:53am

BruceT

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

Naks wrote:
BruceT wrote:
Agreed do the centre box Naks.....

Yeah, I think I will. And I will keep the silencer. This way if SWAMBO complains about the noise, I can refit it without her finding out what I did

"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 6:53am

bell-auto-services

Member Since: 08 Jul 2007
Location: North Yorkshire
Posts: 2232

2013 Defender 110 Puma 2.2 USW Orkney Grey

Id be interested if anyone fancys the test to know what removing the guts from inside a cat V a real decat removal pipe does for the exhaust back pressure, its known that some decats or exhaust systems can cause problems especially with surging due to thepressure being so low inside the exhaust.

Most can be mapped round but it does beg the question is a decat is worth the extra effort at all considering some cars will need a lot more work to make run correctly after a decat is fitted.

here are some pictures of how I measured some temps and the exhaust back pressure on the original 2007 developement of which I see a few in this thread will be running the mapping knowlage from.

http://www.defender2.net/forum/topic5632.html

Im not saying dont ever remove the cat but I am saying be carefull as some cars can run worse with it out!

Regards Pete

15th Jan 2013 11:24am

Naks

Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638

bell-auto-services wrote:
Id be interested if anyone fancys the test to know what removing the guts from inside a cat V a real decat removal pipe does for the exhaust back pressure, its known that some decats or exhaust systems can cause problems especially with surging due to thepressure being so low inside the exhaust.

Interesting comment Pete, is the exhaust back pressure even monitored by the ECU? --
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 11:27am

bell-auto-services

Member Since: 08 Jul 2007
Location: North Yorkshire
Posts: 2232

its not monitered no, but the turbo and some other engine components are build and designed round a known exhaust back pressure as this is always assumed to be standard factory.

pete

15th Jan 2013 11:28am

BruceT

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

bell-auto-services wrote:
Id be interested if anyone fancys the test to know what removing the guts from inside a cat V a real decat removal pipe does for the exhaust back pressure, its known that some decats or exhaust systems can cause problems especially with surging due to thepressure being so low inside the exhaust.

Most can be mapped round but it does beg the question is a decat is worth the extra effort at all considering some cars will need a lot more work to make run correctly after a decat is fitted.

here are some pictures of how I measured some temps and the exhaust back pressure on the original 2007 developement of which I see a few in this thread will be running the mapping knowlage from.

http://www.defender2.net/forum/topic5632.html

Im not saying dont ever remove the cat but I am saying be carefull as some cars can run worse with it out!

Regards Pete

Pete I would be very interested in the results of the decat test and whether its worth it. I have also heard that the removal of the cat aids in reducing cabin temperature. Is this true?
I am about to decat my puma and now you have put doubt in my mind>>>

Thank you. "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 11:33am

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