320d dpf and egr delete via software only

[trinomic]

Hi guys. Is it fine to do the egr and dpf deletes via software only, or is it necessary to do an aftermarket downpipe and physically blank off the egr to eliminate them from the system?

My main goal is preventative maintenance for all the short distance driving i do, and wouldnt mind the extra oomph from the remap. Not too keen on doing a downpipe just yet though.

I understand that software can shut off the egr valve completely, but how does it work with the dpf? Is it not still restrictive with it physically remaining in place?

2011 320d e90, mileage approaching 128k.

Thanks

 

[Twinz]

Do the hardware modifications and then have the car flashed. Was the best mod i made on my X1 20d. The swirlflaps almost got sucked into the engine...the swirl rod blew threw the intake manifold.

After that scare i did the whole delete...Swirl flaps/egr & dpf followed by a tune :thumbs:

 

[trinomic]

Do the hardware modifications and then have the car flashed. Was the best mod i made on my X1 20d. The swirlflaps almost got sucked into the engine...the swirl rod blew threw the intake manifold.

After that scare i did the whole delete...Swirl flaps/egr & dpf followed by a tune :thumbs:

Thanks Twinz, i had a feeling the software only route seemed a bit too easy. That must have been quite a scare though!

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And here i thought swirl flaps werent an issue on the lci's :dunnoanymore:

 

[Twinz]

It is worthwhile assessing your flaps while you assess the condition of the EGR valve etc...pull the manifold and be shocked at the amount of carbon build up.

 

[shark111]

I also thought the swirl flaps aren't an issue on the N47 motors

 

[Solo Man]

Yes Twinz, i also thought the model you have does not have the swirl flaps in the manifold. On my 2011 3l diesel the design is completely different from the E83 3l diesel, with a single flap in the intake duct and not the small individual ones like the older design. Could you please post a pic of your car's engine as i am confused as to the engine numbers denoting which engine. Thanks.

 

[Twinz]

Are you guys refering to my X3 in my signature? Thats a F25

I did the swirl delete on my X1 20d (2011) model.

 

[Twinz]

 

[Alex@Madnessmotorsport]

If you don't want to do a downpipe just have someone empty the Dpf and leave it hollow. Same thing basically but just cheaper. No point deleting it in the software if you leave it in, you will end up hurting the turbo.

 

[trinomic]

If you don't want to do a downpipe just have someone empty the Dpf and leave it hollow. Same thing basically but just cheaper. No point deleting it in the software if you leave it in, you will end up hurting the turbo.

Yep, i've been considering this option since stock piping os already 63mm (i think) as well but havent gotten a quote for it yet. Been quoted 2500 for a downpipe though. I wonder how much cheaper it would be to do it this way.

 

[Solo Man]

Do not want to hijack this thread but Twinz are you telling me the 2011 diesels still have swirl flaps!! I see at least two of them in the pics. Are there more? Do you mean to say one of them broke and nearly ruined your engine!

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Just now Googled the swirl flap issue and it seems i will have to look at mine asap. Did you get one of those white "plugs" to plug the hole left by the actuator rod or did you make up something? Also, how big a job is it (i have the 3l diesel)?

 

[Twinz]

There are a swirl per cylinder.

The actuator valve that turns the swirl rod & flaps broke off..and the swirl rod broke the manifold where it connects to the actuator valve.

After removing the manifold i noticed two of the swirl flaps were stuck in the position you see in the pic. I suspect the stuck flaps caused the valve from breaking...another swirl flap had signs of disintegration.

 

[trinomic]

Dear All

The E90 320d does NOT have DPF - just a normal Catalytic converter. The F30 320d has DPF. I know this for a fact as my 2011 (320d - 135 kW) was confirmed by BMW as NOT having a DPF.

Gearbox OIL must be changed so as to avoid problems later. Give Ricardo a call at ZF Services (079 349 1123). ZF are the Agents for the Gearbox. They will normally change the fluid, sump, filter and reset adaptations. Cost is about R4.5k.

Always use 50ppm diesel.

The 2011 320d does not have Swirl Flaps.

Enjoy the Car!!

So many conflicting posts about these cars on both local and international forums

Any chance the X1 and 320d setups are different?

 

[Twinz]

No need to be confused about your car. Go to an exhaust shop and let them put it on a lift. Then you can see for yourself.

if you want to know if you got swirl flaps, remove the dust cover and take a pic of your engine bay and post it here. That will be a good start.

 

[Solo Man]

Sorry, say again i do not want to hijack this thread. I have just finished doing the swirl flap delete on my 2011 X3 3l d and i was shocked as to how much carbon build up there was in the tracts. I would guess that the airflow was restricted by about 25% on average. The egr valve also had a shocking amount of gunk in it. Cleaned as much i could and removed the actuator rod and flaps (rod and flaps were in good condition after 132k kms) but removed them anyway. Used a bolt/nut and putty to seal the actuator rod hole. Took me about six hours to do the job. Took my time as there are quite a lot of plugs to disconnect and reconnect and some of the bolts for the manifold are difficult to reach. The flaps were quite brittle. I really recommend that owners should at least clean out their manifolds for peace of mind.

 

[trinomic]

Thanks guys. I will get it checked at an exhaust workshop when i get a chance.

Doing some further research though, it appears there is just a normal CAT and not a DPF.

According to my VIN...

Engine N47T
Vehicle options
S169A EU3 exhaust emissions standard

Unless I am completely misunderstanding this :hammerhead:

Also spotted this on another site, not sure how accurate it is....

If you are considering a BMW from the year in which the DPF was first introduced, then the easiest way of seeing whether the car has a particulate filter fitted, would be to check the exhaust. BMW’s with DPF system fitted have an exhaust which has a straight end, whilst non DPF cars have a “turned down” exhaust, which points downwards towards the road.

Any car which is fitted with a DPF would also have no soot just inside the exhaust pipe, so one further test would be to run a finger just inside the exhaust, if you see soot, there is no Diesel Particulate Filter fitted.

:dunno:

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...And the intake manifold...

 

[Twinz]

According to those diagrammes you have DPF & swirl flaps.

But like i said...just take pic of your engine bay...why guessing.

Also remember the Dpf filter and the Cat are tight together and are both restrictions. So removing the dpf & cat are advisable. More power and better fuel consumption. Ideally coupled with a tune.