↓ Advertise on Defender2 ↓

Home > Puma (Tdci) > Exhaust upgrade
Post Reply  Down to end
Page 1 of 2 12>
Print this entire topic · 
Dexterdog



Member Since: 23 Jun 2018
Location: gloucestershire
Posts: 108
Exhaust upgrade
Hi,

This is just about getting a better sound out of my 2.4 tdci.

I have looked for various videos on you tube to try and find out what its likely to sound like. I have also phone Alive an Twisted

Alive suggest a decat system.
By contract twisted suggest a single silencer system that fits in behind the decat and then flows straight through - their advice is the turbo will overspool if you decat.

Can anyone advise please.......

Does decatting enhance or lessen the turbo (sppoling more freely or overspooling) ?

On various videos you can hear a "blowvalve" type sound (darth vadar noise) when you come off the accelorator. From the titles it seems this is only on the decat videos. Is that "blowvalve" type sound the result of decatting ?

Cheers
Post #749803 7th Jan 2019 7:32pm
View user's profile Send private message View poster's gallery Reply with quote
Bergos



Member Since: 08 Aug 2015
Location: Somewhere in Portugal
Posts: 95
Portugal 2007 Defender 110 Puma 2.4 HT Keswick Green
My advice? Buy a Honda Civic and go for Mugen.

Sorry for being ironic. Bergos

LR Defender 110 HT 2007 (2.4 Puma)
https://www.facebook.com/LR.Wanderlust/
Post #750067 8th Jan 2019 8:22pm
View user's profile Send private message View poster's gallery Reply with quote
landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5811
2006 Defender 110 Td5 USW Zermatt Silver
I’ve tried a few systems, Tdci, and Td5. You get much better sound and performance from a decat.

Andy.
Post #750092 8th Jan 2019 9:43pm
View user's profile Send private message View poster's gallery Reply with quote
hornet



Member Since: 04 Jan 2010
Location: Western Europe
Posts: 362
Re: Exhaust upgrade
Dexterdog wrote:

Can anyone advise please.......

Does decatting enhance or lessen the turbo (sppoling more freely or overspooling) ?
Cheers


I only removed the cat (straight through tube, DA4359) and left both silencers. All in all the engine has become more agile, the sound hasn't changed. Also the exhaust temperatures should drop a bit.
Since the vehicle is also on the road as EURO 2 version with exactly this constellation, I think the overspeed discussion is total nonsense.
Post #750292 10th Jan 2019 9:51am
View user's profile Send private message View poster's gallery Reply with quote
Likeomg



Member Since: 29 Jun 2012
Location: Lake District / Newcastle
Posts: 2655
2010 Defender 90 Puma 2.4 HT Stornoway Grey
This is mine...






On my big noisy car, removing the secondary cat's also made a huge difference. and this was an already shouty 600hp naturally aspirated v12.
Post #750298 10th Jan 2019 11:17am
View user's profile Send private message View poster's gallery Reply with quote
hornet



Member Since: 04 Jan 2010
Location: Western Europe
Posts: 362
Qestion: Decat and no silencers at all? And what is the main difference between file 1 and file 2 in hardware, the second one is missing the spool sound a bit...

I really like it, but that spool-sound when lifting the foot is annoying
Post #750311 10th Jan 2019 1:25pm
View user's profile Send private message View poster's gallery Reply with quote
Likeomg



Member Since: 29 Jun 2012
Location: Lake District / Newcastle
Posts: 2655
2010 Defender 90 Puma 2.4 HT Stornoway Grey
Decat with if i remember correctly one silencer box,

the spool sound is a standard turbo, you don't get it with the hybrid turbo setup..
Post #750314 10th Jan 2019 1:39pm
View user's profile Send private message View poster's gallery Reply with quote
custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20620
United Kingdom 
I'm guessing that's the Alive exhaust? TheThunder RollsπŸ‡¬πŸ‡§πŸ‡ΊπŸ‡Έ
β›½οΈπŸ›’οΈβš™οΈπŸ§°πŸ’ͺ
Post #750360 10th Jan 2019 4:23pm
View user's profile Send private message View poster's gallery Reply with quote
Likeomg



Member Since: 29 Jun 2012
Location: Lake District / Newcastle
Posts: 2655
2010 Defender 90 Puma 2.4 HT Stornoway Grey
Hi, yeah.
Post #750409 10th Jan 2019 8:12pm
View user's profile Send private message View poster's gallery Reply with quote
custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20620
United Kingdom 
Thought so, I've had my eye on it for years but can't stomach the price really... for now.. Laughing

Thumbs Up TheThunder RollsπŸ‡¬πŸ‡§πŸ‡ΊπŸ‡Έ
β›½οΈπŸ›’οΈβš™οΈπŸ§°πŸ’ͺ
Post #750413 10th Jan 2019 8:17pm
View user's profile Send private message View poster's gallery Reply with quote
discomog



Member Since: 09 May 2015
Location: Notts/Lincs Border
Posts: 2535
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Santorini Black
Why would anyone want their Defender to sound like a teenager's Seat Ibiza or Vauxhall Corsa? Defender 90XS SW
Mini Countryman Cooper S
Morgan Plus 8
Post #750498 11th Jan 2019 9:00am
View user's profile Send private message View poster's gallery Reply with quote
Likeomg



Member Since: 29 Jun 2012
Location: Lake District / Newcastle
Posts: 2655
2010 Defender 90 Puma 2.4 HT Stornoway Grey
To be honest, when i bolted my alive system on i was still a teenager so.............

Also it's hardly anti social, just a bit more raspy than the standard exhaust, also some performance is gained.
Post #750500 11th Jan 2019 9:11am
View user's profile Send private message View poster's gallery Reply with quote
LR Sam



Member Since: 08 Nov 2012
Location: Yorkshire
Posts: 235
England 
Dexterdog - I have a twisted full exhaust system on a 2.4 - this is a decat system so instead of a cat converter it has been removed but instead of a straight bit of pipe it has a silencer in its place - hence passing an MOT as it visually looks like a cat is there. This gives some back pressure for the turbo to spool up and then allows no restriction from there all the way back. I love it.

From looking at alives website - there's is just a back half system so leaves the cat in place (in the front pipe from the turbo).

The other option if you want to decat is simply buy a cheap front pipe without the cat so straight through. But you will still have the other silencers in the exhaust (one in the tail pipe and one in the centre pipe from memory).

So it is up to you what you go for but varying options and expense

Obviously removing your catalytic converter is illegal before someone else mentions
Post #750505 11th Jan 2019 9:57am
View user's profile Send private message View poster's gallery Reply with quote
Roy5695



Member Since: 15 Feb 2014
Location: Cornwall
Posts: 1123
United Kingdom 2011 Defender 110 Puma 2.2 XS DCPU Indus Silver
This is the Alive system for a 110. It leaves the factory cat/DPF in place. But if you speak to Alive they will supply a decat pipe on top of this giving you the full system.


Click image to enlarge 2011 Defender DCPU 2.2 - https://www.defender2.net/forum/topic30623.html

Instagram - @r22oyp

Roy
Post #750523 11th Jan 2019 12:18pm
View user's profile Send private message View poster's gallery Reply with quote
Zed



Member Since: 07 Oct 2017
Location: In the woods
Posts: 3349
United Kingdom 2010 Defender 110 Puma 2.4 XS CSW Santorini Black
discomog wrote:
Why would anyone want their Defender to sound like a teenager's Seat Ibiza or Vauxhall Corsa?


Loud exhausts on really slow motors make me laugh.
Post #750532 11th Jan 2019 1:07pm
View user's profile Send private message View poster's gallery Reply with quote
Post Reply  Back to top
Page 1 of 2 12>
All times are GMT

Jump to  
<  Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2025 Futuranet Ltd & Martin Lewis
DEFENDER2.NET RSS Feed - All Forums