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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > Reducing smoke on a 330D



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      10-07-2018, 06:55 AM   #45
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Quote:
Originally Posted by dragerboy View Post
My EGR is clean as a whistle, although I'm sure my inlet manifold is in a terrible state. The issue is if you read the MOT test details the car is revved high and that's when the smoke occurs. I guess for many people it will be how strict the MOT tester is.
EGR delete won't let you pass an MOT with a DPF delete. Like you said, when they rev it there will be a bit of soot. I'm just saying it might make life easier for those who have DPFs.
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      11-14-2018, 06:08 AM   #46
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Hi,

Having read the mot manual the tester has to smoke test your car against the manufactures limit. This is on your manufacture plate/sticker between driver and passenger door. It should be 0.50 max.

It canít smoke at idle while they are warming it up. You need to try another mot station. They sound like they have taken the law incorrectly.

Thanks
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      11-14-2018, 07:10 AM   #47
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Originally Posted by dragerboy View Post
Only faults I know of are Glow Plug (either module or plugs) and the main thermostat doesn't get above 80.
Isn't the recomended running optimum temperature 90 degrees + a little

Last edited by Bluewater335D; 11-14-2018 at 07:24 AM..
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      11-30-2018, 10:42 PM   #48
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I've got a Pre-LCI 2006 330d. I bought the car and previous owner said it had a DPF delete and Stage 1 map(I thought it had a clogged DPF cause of the smell and smoke.) It did smoke like a chimney.

After a good 5-6months of daily driving around town and long drives all together. It smokes very casually now, even when I floor it at times the smoke is not even as mad as I'm used to.

It feels like everyones has different results. But after the great responses regarding BW Chip, I will be heading down to him shortly for sure!!

P.S. - Nobody mentions the smell we suffer from having no DPF. In the summer when windows are mostly down, the smell is quite unbearable. Luckily(lol) UK is mostly cold cause it is a bit of a buzzkill. Dont you guys agree? How strong of a smell do your DPF-less machines do?
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      12-01-2018, 12:06 AM   #49
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just gont keep breathing it in,,uts way bad,,and yeh it stinks,,,when you come to lights etc and you know your going to be there more than say 10 seconds,,just turn off
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      12-01-2018, 09:03 AM   #50
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My car is in with a dealer at the moment. One of the issues (other being a snapped NSR coil spring) is thick smoke after the engine has been left running idle for more than 5-10 minutes. This eventually clears after the car has been enthusiastically driven for a while. Exhaust tips are also black with soot.

Technician has 'diagnosed' that the injectors are weeping, so getting them replaced. Could anything else be causing it? Turbo? EGR related?
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      12-01-2018, 11:16 AM   #51
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Quote:
Originally Posted by Huskla View Post
I've got a Pre-LCI 2006 330d. I bought the car and previous owner said it had a DPF delete and Stage 1 map(I thought it had a clogged DPF cause of the smell and smoke.) It did smoke like a chimney.

After a good 5-6months of daily driving around town and long drives all together. It smokes very casually now, even when I floor it at times the smoke is not even as mad as I'm used to.

It feels like everyones has different results. But after the great responses regarding BW Chip, I will be heading down to him shortly for sure!!

P.S. - Nobody mentions the smell we suffer from having no DPF. In the summer when windows are mostly down, the smell is quite unbearable. Luckily(lol) UK is mostly cold cause it is a bit of a buzzkill. Dont you guys agree? How strong of a smell do your DPF-less machines do?

Let me know how you get on with the remap by bw chip, heís in London right?
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      12-01-2018, 04:39 PM   #52
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^ Yes, he is. I'm from the opposite side of him but he is definitely the first person I contact in regards to any tuning. Will make posts on here about that for sure.
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      12-02-2018, 10:11 AM   #53
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Originally Posted by Txs330D View Post
Let me know how you get on with the remap by bw chip, heís in London right?
middelsex
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      09-08-2019, 01:05 PM   #54
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Did you get a tune done?
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      09-08-2019, 01:06 PM   #55
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Quote:
Originally Posted by 1 AKY View Post
My car is in with a dealer at the moment. One of the issues (other being a snapped NSR coil spring) is thick smoke after the engine has been left running idle for more than 5-10 minutes. This eventually clears after the car has been enthusiastically driven for a while. Exhaust tips are also black with soot.

Technician has 'diagnosed' that the injectors are weeping, so getting them replaced. Could anything else be causing it? Turbo? EGR related?
How did it go? What colour was the smoke?

All resolved?

Did you get any videos?
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      09-11-2019, 04:33 PM   #56
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FYI, regarding the MOT regs...
- any visible smoke at any RPM from a car which was originally fitted with a DPF is a fail.
- any signs of tampering (or removal) of the DPF is a fail.

So if you want to pass an MOT without needing a 'postal MOT', you need to have the DPF in place and it needs to work. Since it's been proven that you can reliably make good power with a DPF in place, there really is no reason to remove it...unless you intentionally want to clog up the planet with more soot. Not trying to be holier than thou or whatever; it just annoys me seeing cars which should run clean, but are billowing black smoke everywhere...it's not clever or cool!

As has also been stated in various places in this thread, it doesn't take a crazy long drive to keep the DPF happy; my 10mi/20min each way commute did it fine (M57 330d, no tune, decent fuel). You do need your thermostats to be working properly though, and other things like glow plug module errors can also prevent active regens.
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