[osman02]

After remap +downpipe+egr delete it throws this code now consistenly. tuner says i need to change the clean air intake part 13718507369 due to probable leakage.

is this possibly the cause? any other options?

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0x27F000 Charge air hose monitoring at idle: charging air tube dropped out

I have seen this be from tune related causes when messing with EGR function. Let me guess, N57 engine?

[osman02]

What does this mean? (0x27F000 Charge air hose monitoring at idle: charging air tube dropped out)

I changed the air intake part 13718507369. But fault code 0X27F000 is still there.

yeah it is 330diesel F30.

[Watsey]

The fitting which connects the boost pipes to the intercooler are known to wear, which results in leaks.

That’s where I’d start investigating.

[osman02]

Is this related to the boost pipes then? I thought it was part 13718507369

Can this leakage cause extra black smoke during kickdowns due to inefficient burning? (downpipe is installed so dpf is gone)

[Enabled]

If everything else is sealed up, this is from the tune.

[osman02]

thanks guys, I will do a smoke test tuesday. I will let you know.

Much appreciated!

[Watsey]

Originally Posted by osman02

Is this related to the boost pipes then? I thought it was part 13718507369

Can this leakage cause extra black smoke during kickdowns due to inefficient burning? (downpipe is installed so dpf is gone)

Short answer, no.

Turbo diesel engines work on the basis of an over-supply of air, therefore any smoking is due to fuelling (the tuner has mapped the fuelling beyond the ‘smoke line’) and the lack of a DPF means that any excess particulates from incomplete combustion are not being captured.

Removing the DPF is almost always a bad idea, and very often not required unless the engine is being tuned to very high outputs.

[osman02]

Hi Watsey.

I have a 330d 2015 N57 mapped to 360hp 750nm + downpipe+egr delete. So if I understand correctly he tuned too much fuel in to get higher hp output?

So dpf is a must removal right? (because of the downpipe)

[Enabled]

Originally Posted by osman02

thanks guys, I will do a smoke test tuesday. I will let you know.

Much appreciated!

I really doubt you have a leak

I will not try to educate your tuner, but this is in the tune and the method of dealing with the EGR. It's very specific to N57 mapping.

[osman02]

Hi Enabled. Im going back tomorrow to do the smoke test. He meanwhile kind of said that maybe the injectors cant handle the tune?
Can you please elaborate more on the EGR? What are the options for this when tuning? And cant he just re-enable it? Would that impact the overall tune performance/output PS/HP?

[osman02]

to add: i read somewhere about injection timings ATDC BTDC and lamdba ratio that can cause massive smoke. How can I challenge him with this? Im starting to think he just applied a standard ecu flash copy paste and send me home.

[Watsey]

Originally Posted by osman02

Hi Watsey.

I have a 330d 2015 N57 mapped to 360hp 750nm + downpipe+egr delete. So if I understand correctly he tuned too much fuel in to get higher hp output?

So dpf is a must removal right? (because of the downpipe)

There are several topics here.

Irrespective of petrol or diesel, installing a downpipe typically means removing the catalyst (petrol) or DPF (diesel). If you, or the tuner, made the decision to install a downpipe then it's commonly understood that the cat/DPF is going to be removed.

Is it mandatory to remove the DPF to get to 360bhp ? No. Some tuners assert that removal of the DPF is necessary on the 330d as a means of reducing EGTs which can spike due to exhaust back-pressure. Other tuners say the these DPFs are not restrictive (and don't massively affect EGTs) and can be left in-situ. The DPF is common between the 30d and 35d units, and tuners in the UK have successfully and reliably remapped the 35d to >370bhp with the DPF retained.

Once the smoke line has been reached there is little, if any, point is introducing more diesel fuel - it will only result in more unburnt fuel = particulates (smoke). As the smoke line represents the limit of combustion this often means that the turbo and/or inlet air tract is at the limit of the amount of fresh air that can be supplied. It's often quoted that the OEM turbo on the 30d has a maximum air flow rate which correlates to 330bhp with the DPF retained. My 30d still has the DPF and has been recorded on more than one dyno at 340-345bhp, but dyno equipment is easy to manipulate. I am more interested in the profile (plateau) of the torque curve as this is what correlates to performance on the road.

The tuner that did my remap gave me a dyno graph which showed 360bhp and I just laughed. There's no way that figure was credible.

Is 360bhp achievable with the DPF and EGR removed ? I don't know, but an extra 30bhp beyond what credible tuners in the UK are quoting, without the use of a hybrid turbo, seems optimistic.

[osman02]

Hi Watsey. Thanks for replying. Much appreciated! I will confront him tomorrow. I will ask for the torque curve for this mapping. Is there anything else I can request from him? Like a mapping file or a log? So we can see together what he did.
Cheers!

[Watsey]

Originally Posted by osman02

Hi Watsey. Thanks for replying. Much appreciated! I will confront him tomorrow. I will ask for the torque curve for this mapping. Is there anything else I can request from him? Like a mapping file or a log? So we can see together what he did.
Cheers!

A dyno graph would be very useful but this would need to be of your car/engine both before and after the remap. It's the only way of seeing the gains which have been achieved. The dyno graphs would also need to show the dyno fields/settings (i.e. ambient temperature, ramp angle, gear ratio, etc) so you can see whether they were constant before and after the remap was applied.

Data logging is not normally supplied, but (if it was supplied) would need to be generated in real-time whilst the car was on the dyno.

Alternatively you could use a suitable logging software and an OBD dongle to collect data from your engine while you do some full throttle runs but of course you'd need somewhere safe/legal to do that.

[osman02]

Which dongle do you prefer?

[osman02]

https://postimg.cc/Lg6SfymH

this is the source of the leakage. not sure how this happened. but this is called the valve cover in english?

[Watsey]

Originally Posted by osman02

Which dongle do you prefer?

This is the dongle that I use with OBDFusion. It works well with that App but I have no idea whether it is suitable for data logging relating to engine fuelling, air supply, etc.

https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1

[osman02]

https://postimg.cc/Lg6SfymH

this is the source of the leakage. not sure how this happened. but this is called the valve cover in english?

[Enabled]

Originally Posted by osman02

https://postimg.cc/Lg6SfymH

this is the source of the leakage. not sure how this happened. but this is called the valve cover in english?

Nice find! How did that crack? Pressure applied on the intake tubing?
The entire valve cover needs to be replaced now.

[osman02]

Originally Posted by Enabled

Nice find! How did that crack? Pressure applied on the intake tubing?
The entire valve cover needs to be replaced now.

I really dont know. During tuning he already mentioned a leakage so it was already there. This car had a front right accident 5 years ago. Maybe then it was damaged and during the time it got bigger and bigger.

When we found the hole the plastic was still 'burning'.

BMW asks 4xx euro for this part ... Is it wise to take a after market one or good 2nd hand one?

[Enabled]

The aftermarket ones for other engines (N55) are really thin and crack very easily. I'm not sure if the same would apply, IF they exist for your engine.