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Reducing smoke on a 330D
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09-05-2018, 06:03 AM | #1 |
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Reducing smoke on a 330D
So after some possible solutions for reducing smoke on my E90 330D. Have just failed Mot due to visible smoke.
Car has DPF delete and remap but still runs EGR. Obvious solution would be to buy a DPF and refit but curious to know if I would get any errors on the dash. |
09-05-2018, 06:37 AM | #2 |
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Does your car have any faults, even ones that are not lighting up on the dash?
When was the last time you gave it a good italian tune up? Check the air filter too, if that is very old and clogged that in turn can cause smoke from unburnt fuel.
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2016 435xd GC, MTC intercooler, centre and back box deletes, GKR stage 2 remap, methanol injection, H&R lowering springs. To do: wash it. |
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09-05-2018, 06:40 AM | #3 |
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Only faults I know of are Glow Plug (either module or plugs) and the main thermostat doesn't get above 80.
Air filter is a Pipercross item I think about 20k miles old. |
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09-05-2018, 08:28 AM | #4 |
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is this a joke,,if its a garage who do mot tests to the law,,then it will fail,surely you kinow the new mot rules,,i suggest you find a friendly tester.
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09-05-2018, 10:24 AM | #6 |
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09-05-2018, 10:25 AM | #7 |
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09-05-2018, 11:06 AM | #8 |
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09-05-2018, 11:28 AM | #9 |
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easy coded out,,but if its mapped then it should of gotten done when map was done..then the cost was minimal,,but the time to take it in and get it coded out etc would be quite expensive i would think,,dont know if a good code reader could knock it out for mot..maybe?
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09-05-2018, 11:52 AM | #10 |
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Yes the issue will now be that if I want it coded out then have to have remap at same time so probably £250-£300, and of course if it doesn't solve the problem I'm back to square one.
Going to give the guys who did my car 3 years ago and see what they say. Does anyone know labour time to remove and refit a dpf? |
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09-06-2018, 07:57 AM | #11 |
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Update - have spoken with tuner and he says likely to be related with something else such as, boost leak, inlet manifold leak or carbon build up, oil breather system or injectors etc.
He also said the visible smoke test with a dpf car is only related to Euro Zone 6 cars 2014 onwards but I've looked through the MOT guide and not sure if this is true. What he did say is my issue likely to be caused by another issue with car so I will be doing a few little jobs to start with and will go from there. By the way my car failed on 8.2.2.2(d) if any MOT guys are on here. My smoke test results Oil Temp = 73C Peak 1 = 0.50 Zero Drift = 0.06 Average = 0.44 |
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09-06-2018, 11:08 AM | #12 | |
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Drives: E91 330d M-Sport Touring
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Good luck trying to get zero visible smoke with no DPF. |
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09-06-2018, 12:01 PM | #13 | |
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What annoys me about this is that I can be out driving and see hundreds of brand new petrol and diesels all smoking as they accelerate off lol. |
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09-07-2018, 03:04 AM | #14 | |
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Drives: E91 330d M-Sport Touring
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Even if you're handy with the spanners and can do fitting and removal yourself, it really doesn't seem worth the time, cost and effort. You'd also be at risk of getting caught out in a roadside vehicle check if you're ever unlucky enough to get tugged for one of those. Fairly or not, diesel emissions are being clamped down on and a visibly smoking diesel less than 12 years old could be just the reason VOSA need to pull you in for a check. |
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09-07-2018, 03:58 AM | #15 | |
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09-07-2018, 03:59 AM | #16 | |
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09-07-2018, 04:51 AM | #17 | |
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You can't tune out the smoke, it's a diesel, you can reduce it with a good time but not eliminate it. Just because you can't see it coming out while your driving g doesn't mean it's not producing smoke. Try standing next to the exhaust while it's revved then you will see the smoke. I would find another tuner if I were you. What sort of figures are you getting power wise??. Places like BMW chip tune and even Bluefin (I have one) can get decent power with the DPF in place. Just my 2 pence worth. |
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09-07-2018, 08:05 AM | #18 | |
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Will update next week as going to order a new DPF and see if someone can fit it for me next week. |
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09-07-2018, 09:38 AM | #19 |
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Don't forget to have the regen coding added to your map so that the DPF can do a regen otherwise it will soot up. You don't have to do huge long journeys for it to regenerate just have to get up to 75 Deg C and average around 1400 revs.
Most DPF problems come from an underlying issue such as cold running or split boost hose etc causing it to soot up or prevent it from doing a regen. A faulty glow plug controller can also prevent a regen. (I think) Just keep up with the maintenance and make sure it's running as it should and you will probably fine you are ok with the DPF. It is annoying to have them forced upon you but you know what, I m actually glad cars have them. Whenever I follow and older car without one it always stinks my car out with diesel fumes. Never get it following a car with a DPF fitted tho! Just to add, if you had a Carley or similar you can force a regen yourself as preventative maintenance. |
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09-07-2018, 04:24 PM | #20 |
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If I was you I'd maybe speak to BWChiptune as thats the only tuner im aware of that actually recommends leaving the DPF on when doing a remap with little difference to one that has it removed so it might be interesting to see what he has to say.
Also, you tend to find some people who have DPF issues could have prevented it but arent aware of what actually causes a DPF to clog in the first place (thermostats are common and depending on the DDE version the glow plugs may prevent a regen) both of which wouldnt show any errors on the dash. But if you go down the route of having a remap with the DPF you could also do some research and learn how to read the soot levels and also understand if the faults you pull from the car affect the regeneration and act on it before your start building up some serious bqck pressure. As i say i think BMChiptune may be a good place to start. |
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09-08-2018, 01:55 PM | #22 |
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Definitely BWchiptune. Jason certainly knows his stuff when it comes to mapping and dpfs.
I travelled to him from Bridgwater in Somerset to get my 330d mapped simply because of his reviews and the fact he travels the world tuning BMW's. I opted for an all round map instead of going for the aggressive option and my car is now up to 317bhp and 673nm with the dpf still in place. Check out Bimmerforums UK. He's on there and is constantly telling everyone you simply don't need to remove a dpf ever. I thought about getting rid of mine, but glad I read up on it and listened to what Jason has said about them. |
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