A5 3.0 DPF delete

[Mattyderv]

Hi, I'm quite new here and spent ages looking for a guide on removing an early (2008) A5 3.0 DPF. I couldn't find one so blindly took on the task with a mate (albeit a mechanic) and managed to do the full thing (removal/customising/refitting) in a morning. We read some bits and bobs about the turbo needing to come off, engine mounts off, gearbox out etc. but this isn't the case, at least not for us.

I'm far from an avid mechanic but if anybody is planning on removing their DPF for any reason and needs any pointers/guidance etc, drop me a message or reply and i'll try to help out best I can. If there's enough need for one, I can also put together a rough guide from memory and possibly include some photos.

Cheers
Mat

 

[NotNormal]

I've not looked under the A5 for a long time, but it shouldn't need the turbo off.
It's not a huge jobs, I did mine myself on my A6 3.0tdi

Having a ramp made it easier

 

[Paul @ Unit 9 Remaps]

defo dont need the turbo off

 

[Mattyderv]

Yeah this is what I mean, there's people all over t'internet banging on about this, that and the other having to come off for access. It put me right off deleting it until a proper technician looked at the job. This might encourage other people to attempt the job and help make the UK warmer

 

[Ginge247]

Yeah this is what I mean, there's people all over t'internet banging on about this, that and the other having to come off for access. It put me right off deleting it until a proper technician looked at the job. This might encourage other people to attempt the job and help make the UK warmer

Is yours the long or short version m8?

 

[desertstorm]

As above there is supposed to be a major difference between the long or short downpipe version.
http://www.supersprint.com/ww-en/au...ch-version-of-the-downpipe-fits-your-car.aspx

It says for the long version may require 15 hours ????. That must be removing the gearbox.
Mine is the short version and it's been on and off the car several times whilst I have been sorting out the hybrid turbo.
I can change the turbo over in just over an hour without actually trying too hard I have done it that many times now.
The only tricky part of removing the DPF really is getting the heatshield in and out and that one bolt on the downpipe that you need to get from underneath with several extensions to reach up.
Where did you get yours mapped ?

 

[Mattyderv]

Mine must be the short down pipe Ginge. Wasn't aware there were two types to be honest but the long type and that's probably what I'm referring to. Does anybody know why the long and short down pipes vary? Is it due to age earlier/later models or the model its self A4/A5/A6 etc?

I know exactly which bolt your referring to and its a bit of a nightmare, we removed the gearbox mount and lowered box slightly to get at that one. Kind of just pulled and twisted at the heat shield after unbolting the DPF but wouldn't recommend because the brake lines sit pretty close behind it.

Got it mapped at a shop coincidentally named Dark Slide based in Hartlepool, their main business is building drift cars but also map the odd car.

 

[desertstorm]

Think the long downpipe version was only fitted to early very early B8 cars . Audi must have figured they had dropped off by making it very difficult to remove a component that needn't be that hard to get off so did some re design.
If it was a french car it would have been left and you would probably have to remove the gearbox to get at it.

 

[Mattyderv]

Think the long downpipe version was only fitted to early very early B8 cars . Audi must have figured they had dropped off by making it very difficult to remove a component that needn't be that hard to get off so did some re design.
If it was a french car it would have been left and you would probably have to remove the gearbox to get at it.

Makes sense like, if its crap.. change it

Hah if one didn't know any better he might think there's a bit of friction between you and french cars? Is it their inability to produce a dashboard which doesn't rattle? The only one i've owned was a phase 2 Cup Clio.. there was plenty to love about it but driving it was like being inside a child's rattle

 

[desertstorm]

LOL You don't know how much I really don't like French cars. I have never owned one and never will. I have played with enough of them over the years, friends and family, to know how useless they are when something goes wrong.They just don't seem to think about what happens when something needs replacing. And even some fairly basic jobs seem to require specialist tools.

 

[Ginge247]

Mines a 57 plate and it's the ******* version, I mean long version haha. Must say mind on the subject of our cheese eating surrender Monkeys, In the past I've had 2 saxos, one being a track car, and 2 phase 1 Clio sports and never gave me any trouble and easy enough to work on. This A5 I have on the other hand has been totally the opposite. I must have bought a wrong un !

 

[Gazwould]

LOL You don't know how much I really don't like French cars. I have never owned one and never will. I have played with enough of them over the years, friends and family, to know how useless they are when something goes wrong.They just don't seem to think about what happens when something needs replacing. And even some fairly basic jobs seem to require specialist tools.

Yes remember something to do with maybe heater venting in a Shitron C5 / Pug 406 instead of a simple fix it was whole dash out job of 10 hours , even the main dealers didn't want to do it .

 

[Paul @ Unit 9 Remaps]

it.

Got it mapped at a shop coincidentally named Dark Slide based in Hartlepool, their main business is building drift cars but also map the odd car.

where the diesel doctor used to be based ? not throwing stones' just be carefull they like dicking around more than building drift cars lol

 

[Mattyderv]

Not sure Paul, but by dicking around do you mean in customers cars? I ask this because when I collected the car there was 70 miles missing from the tank and there was a strange "tickety-tick" coming from the engine bay, my **** fell out at first but it turned out to be an injector copper seal.

 

[Mattyderv]

Mines a 57 plate and it's the ******* version, I mean long version haha. Must say mind on the subject of our cheese eating surrender Monkeys, In the past I've had 2 saxos, one being a track car, and 2 phase 1 Clio sports and never gave me any trouble and easy enough to work on. This A5 I have on the other hand has been totally the opposite. I must have bought a wrong un !

"cheese eating surrender Monkeys" - Crying

 

[Paul @ Unit 9 Remaps]

Not sure Paul, but by dicking around do you mean in customers cars? I ask this because when I collected the car there was 70 miles missing from the tank and there was a strange "tickety-tick" coming from the engine bay, my **** fell out at first but it turned out to be an injector copper seal.

Meant more of with there own cars and thinking they a drift team etc to be honest. What you say wouldn't put past them though

 

[A3jack]

Matty what's your car like with it off? Any noticeable difference? I'm getting the DPF light on mind and thinking of just getting rid of the DPF

 

[bullerbristol]

hi there, I have a 2008/57 plate audi a5 3.0tdi im about to purchase a down pipe but am struggling with long or short/ my flange is visible at a push from the top, its about 10" down from the last lambda sensor, there is then a flange for a second pipe and that pipe has a bolt on it that mounts to the car for support? any ideas? also is fitting a diy job? im a pretty experienced mechanic and engineer by trade. the dpf had already been mapped out but im craving that v6 rumble and my current straight through has not achieved that so time for the stock downpipe to go!

any input would be really appreciated many thanks james

 

[desertstorm]

I posted this link earlier in the thread.
http://www.supersprint.com/ww-en/au...ch-version-of-the-downpipe-fits-your-car.aspx
On the short version of the DPF there isn't a lot of pipe till you get to the flange. The difference is quite marked.
This is a picture of a long flange DPF part number is
8K0254750LX
http://bazar.automedik.cz/AMD5649684905/audi/a5
Try checking the part number on your DPF.
Here is a long pipe
http://www.ebay.co.uk/itm/Audi-A4-8...Partikelfilter-CCWA-8K0254750J-/191791699124?

and a short pipe
http://www.ebay.co.uk/itm/Audi-A4-8...Partikelfilter-CAPA-8K0254750K-/191807034019?

If the DPF has been removed and you have straight through boxes it should be quite reasonable. They may have left the cat in the DPF which is the first smaller drum on the DPF, the second larger drum is the actual DPF.

I bought a downpipe from RM motors in Poland, Very good quality and price a lot cheaper than Darkside. They do several versions.

http://www.ebay.co.uk/itm/201-Downpipe-RM-Motors-Audi-A4-A5-3-0-tdi-76-mm-3-RM-Motors-/262297630122?

http://www.ebay.co.uk/itm/202-Downpipe-RM-Motors-Audi-A4-A5-2-7-3-0-tdi-short-version-/141896110617?

http://www.ebay.co.uk/itm/204-Downp...-2-7-3-0-tdi-short-version-2-5-/141901834297?

They do larger 3 inch and standard size downpipes, as well as downpipes for the newer cars with the 2260vklr turbo which has a different exhaust flange.

 

[bullerbristol]

hey desertstorm, thanks for the reply.
I literly just purchased the 202 downpipe from rm on ebay about an hour ago! hope its rite! how fast was the shipping?

 

[bullerbristol]

have I messed up and got the one for the wrong turbo?

 

[desertstorm]

It's the 3 inch version of the short pipe for the older GTB2260vk. So the flange will be right for your turbo and as long as you have a short pipe you should be good. Because it's the 3 inch version which is larger than the standard 62.5mm pipe they do you will have a bit of a step when it transitions from this pipe to the standard downpipe. Unless you have a 3 inch system fitted on the car.
Not a major issue.
soon be sounding like this a tad noisy for me .

 

[bullerbristol]

ah well lets hope its short! and wow that's going to be loud! ive gutted the back boxes already so im thinking some silencers may be in order lol

lets hope its an easy fit, also did you remember how long the shipping time was?

 

[desertstorm]

If I remember it was around 2 weeks. I think they possibly make these things to order rather than having them on the shelf.
Mine sounded like this with the downpipe fitted and the divertor valve I have on my car open.

I currently have gone back to the original gutted DPF which I modified a little to give a small amount of back pressure. Thus it's no longer this loud.
The downpipe is quite well made, here are some pictures, mine was a 62.5mm version so the pipe on yours will be bigger.

 

[bullerbristol]

any reason you have gone back to more back pressure? im hoping this wont make it slower lol

 

[desertstorm]

When I fitted the hybrid turbo had issues with oil useage and it seems this was due to not enough back pressure in the exhaust. The hybrid has a lot bigger turbine and rotational speed is a lot slower at low RPM. The current solution I am running at the moment is fine. Back pressure measures about 70 hpa at the maximum which is only 1Psi . It's not going to have a great effect on performance. when it's all mapped and got some more miles on it I will try the downpipe again, small plus point is that it is "legal" at the moment MOT wise , but it passed the last MOT with the RM downpipe on anyway.

 

[Mattyderv]

Matty what's your car like with it off? Any noticeable difference? I'm getting the DPF light on mind and thinking of just getting rid of the DPF

Hi Jack, when my DPF came off I drove it straight to another shop for a map as well as a DPF/EGR delete. It feels quite a bit quicker, boost doesn't kick in as aggressively as standard but spools earlier and at a higher PSI and peaks off later in the rev band. These are probably combined characteristics of the map, EGR and DPF delete but it'll be worth spending the extra on a map if you're planning to delete the DPF anyway.

Hope this helps
Mat

 

[Mattyderv]

ah well lets hope its short! and wow that's going to be loud! ive gutted the back boxes already so im thinking some silencers may be in order lol

lets hope its an easy fit, also did you remember how long the shipping time was?

Hiya mate - My exhaust is a completely unsilenced 2.5inch piece of pipe from the turbo back, which Y's off to the twin exit, which again is just straight 2.5inch pipe with 3inch tips. It's not overly loud but over the course of 3 or 4 weeks of it being done the tone changed slightly, maybe due to the inside of the exhaust coking up. Even with the EGR delete, there is minimal smoke (standard turbo) under a heavy foot but it does stink from time to time!

Also you'll get an awesome V6 tone at certain points in the rev range as well

 

[Gazwould]

Yeah new exhaust systems get quieter after a bit when sooted up .

 

[bullerbristol]

Hey guys thanks for all your replies regarding my posts, the downpipe had arrived and I must say as a engineer I'm impressed it's a very well built product! Anyway my question is to those who have fitted these themselves, how difficult is it and I'm assuming looking at it you take parts of the bulkhead out to gain better access?

Any reply would be really appreciated

 

[desertstorm]

Hopefully these will help a bit. Doesn't look quite as straightforward on an A5 as it is on an A4.

 

[BIGA3T]

Yeah this is what I mean, there's people all over t'internet banging on about this, that and the other having to come off for access. It put me right off deleting it until a proper technician looked at the job. This might encourage other people to attempt the job and help make the UK warmer

I need this doing to my a5.. How much would charge?

 

[Paul @ Unit 9 Remaps]

all companies charge different prices,

 

[jsr]

Quick question. How on earth I'm supposed to loose the one DPF nut from the underside? I took everything else than the gearbox out of the way but I can't really even see the nut. Should I be using a spanner or a ratchet with extension?

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