Intake/exhaust-manifoil tuning

olit · 13-06-2008, 13:41

Hi!

When I read about TDI-tuning it is often remaps that is the "answer" - generic or custom. Some mechanical bits - down-pipe, bigger turbo's, are mentioned sometimes.

But what about manifold? Is it developed "ideal-length" tubular exhaust-manifolds and ditto straight-tube intake-manifolds for VAG's TDI-line - or is this considered uneccesary.

olit

EDIT: Manifold it is.... now

bengie · 13-06-2008, 18:31

i assume you mena manifolds but seeing as your from norway i'll let it slide

i tried for a while to get an equal length tubular manifold for my standard fit turbo on my 1.8T and unless your going bigger turbo they are hard to find and can be very expensive. a decent manifold alone can cost upwards of £1000.

Lummox · 13-06-2008, 20:19

Also on the standard diesel turbo the manifold is part of the turbo itself.

olit · 14-06-2008, 02:05

Hi!

I know it exist some tubular manifolds for the 1.8T petrol engine. And I have read that they give the engine a broader/wider powerband.

I was wondering about why not do the same thing to a diesel engine. A original powerband between approx 2000 and 3500 rpm is pretty short...

And was wondering if somebody like the Dervdoctor might have tried it, and to what effect!

olit

Lummox · 14-06-2008, 05:33

You can and from what i've seen they do. But only when going for a bigger aftemarket turbo anyhow.

olit · 14-06-2008, 20:03

Nice!!

Now we are talking!!!

olit

vindaloo · 19-06-2008, 11:47

Alternatively...

SPA Turbo - Volkswagen

dervdoctor · 23-06-2008, 14:50

you need to keep the manifold as short as possible. Most TDi's have a manifold built into the turbo these days. But if you have a real big turbo we only make the manifold as short as possible really to make best use of the exhaust gas

13-06-2008, 13:41	#1
olit Briskodian Join Date: Aug 2007 Location: Norway Posts: 72 Thanks: 14 Thanked 2 Times in 2 Posts	Intake/exhaust-manifold tuning Hi! When I read about TDI-tuning it is often remaps that is the "answer" - generic or custom. Some mechanical bits - down-pipe, bigger turbo's, are mentioned sometimes. But what about manifold? Is it developed "ideal-length" tubular exhaust-manifolds and ditto straight-tube intake-manifolds for VAG's TDI-line - or is this considered uneccesary. olit EDIT: Manifold it is.... now Last edited by olit; 14-06-2008 at 01:56.

13-06-2008, 18:31	#2
bengie splash!!!! Join Date: Feb 2004 Location: planet earth Posts: 14,661 Thanks: 15 Thanked 115 Times in 103 Posts	Re: Intake/exhaust-manifoil tuning i assume you mena manifolds but seeing as your from norway i'll let it slide i tried for a while to get an equal length tubular manifold for my standard fit turbo on my 1.8T and unless your going bigger turbo they are hard to find and can be very expensive. a decent manifold alone can cost upwards of £1000. __________________ owner of a skoda octavia 4xvrs3

13-06-2008, 20:19	#3
Lummox Hairy Yeti Join Date: Sep 2003 Location: Newport Pagnell Posts: 21,403 Thanks: 19 Thanked 573 Times in 501 Posts	Re: Intake/exhaust-manifoil tuning Also on the standard diesel turbo the manifold is part of the turbo itself. __________________ Unit 18 now open Servicing, repairs, modifications you name it we do it. Cupra console bushes at special price, PM for a very competitive quote.

14-06-2008, 02:05	#4
olit Briskodian Join Date: Aug 2007 Location: Norway Posts: 72 Thanks: 14 Thanked 2 Times in 2 Posts	Re: Intake/exhaust-manifoil tuning Hi! I know it exist some tubular manifolds for the 1.8T petrol engine. And I have read that they give the engine a broader/wider powerband. I was wondering about why not do the same thing to a diesel engine. A original powerband between approx 2000 and 3500 rpm is pretty short... And was wondering if somebody like the Dervdoctor might have tried it, and to what effect! olit

14-06-2008, 05:33	#5
Lummox Hairy Yeti Join Date: Sep 2003 Location: Newport Pagnell Posts: 21,403 Thanks: 19 Thanked 573 Times in 501 Posts	Re: Intake/exhaust-manifoil tuning You can and from what i've seen they do. But only when going for a bigger aftemarket turbo anyhow. __________________ Unit 18 now open Servicing, repairs, modifications you name it we do it. Cupra console bushes at special price, PM for a very competitive quote.

14-06-2008, 20:03	#6
olit Briskodian Join Date: Aug 2007 Location: Norway Posts: 72 Thanks: 14 Thanked 2 Times in 2 Posts	Re: Intake/exhaust-manifoil tuning Nice!! Now we are talking!!! olit

19-06-2008, 11:47	#7
vindaloo Briskodian Join Date: Sep 2004 Location: South Bucks Posts: 1,130 Thanks: 15 Thanked 16 Times in 16 Posts	Re: Intake/exhaust-manifoil tuning Alternatively... SPA Turbo - Volkswagen __________________ Slowly turning the planet sooty.

23-06-2008, 14:50	#8
dervdoctor Site Sponsor Join Date: Aug 2006 Posts: 196 Thanks: 0 Thanked 4 Times in 4 Posts	Re: Intake/exhaust-manifoil tuning you need to keep the manifold as short as possible. Most TDi's have a manifold built into the turbo these days. But if you have a real big turbo we only make the manifold as short as possible really to make best use of the exhaust gas __________________

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