dpf down pipe ?? - Alfa Romeo Forum
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(Post Link) post #1 of 15 Old 03-09-16 Thread Starter
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dpf down pipe ??

has anybody fitted one of these



http://www.ebay.co.uk/itm/Downpipe-F...IAAOSwNphWatl1
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You won't pass an MOT with that on ur car, unless you put the dpf back on prior to every MOT.
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(Post Link) post #3 of 15 Old 03-09-16 Thread Starter
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Originally Posted by trcXL View Post
You won't pass an MOT with that on ur car, unless you put the dpf back on prior to every MOT.
so what do people mean by dpf bypass, can the 2.0 have its dpf drilled without any problems? any help would be great as i find it difficult to understand , i will be remapping it soon but want to do the gr blank and sort the dpf out ,i keep doing search's but find it difficult to get my head around all the info
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Originally Posted by trcXL View Post
You won't pass an MOT with that on ur car, unless you put the dpf back on prior to every MOT.
It depends if the tester spots it or not. The car may or may not pass the emissions test with the DPF removed, if it fails the emissions test then its a guaranteed fail but a well-remapped engine in good running order would hopefully just get under the very low smoke limit.

With the undertray on you can't see the DPF from below and if you refitted the heatshields and had the engine cover installed it might be easy to miss the fact the DPF is missing. An Alfa specialist would likely spot it but testers not used to seeing Alfas might miss it. My local MOT centre didn't spot my 2.4 JTD didn't have a cat on it despite the decat pipe under the car. I am assuming that he assumed the cat was above the undertray somewhere where he couldn't spot it.

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(Post Link) post #5 of 15 Old 03-09-16 Thread Starter
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Originally Posted by Pud237 View Post
It depends if the tester spots it or not. The car may or may not pass the emissions test with the DPF removed, if it fails the emissions test then its a guaranteed fail but a well-remapped engine in good running order would hopefully just get under the very low smoke limit.

With the undertray on you can't see the DPF from below and if you refitted the heatshields and had the engine cover installed it might be easy to miss the fact the DPF is missing. An Alfa specialist would likely spot it but testers not used to seeing Alfas might miss it. My local MOT centre didn't spot my 2.4 JTD didn't have a cat on it despite the decat pipe under the car. I am assuming that he assumed the cat was above the undertray somewhere where he couldn't spot it.
great info thanks , i have no under tray so would need to have it cut open like you have mention in another post, i dont want smoke coming out of my car, so i take it i would have to have a proper map rather than just a chip plug and play thing
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You can buy a "sport dpf" which is just a pre- hollowed-out dpf. So it looks like you have one.
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(Post Link) post #7 of 15 Old 03-09-16 Thread Starter
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from who ,i have looked on google"alfa 159sport dpf" but nothing comes up
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Think hard and long before you remove it though.....its there for a health reason. Also, you would need to remove it from ECU.
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Originally Posted by alfahemi View Post
Think hard and long before you remove it though.....its there for a health reason. Also, you would need to remove it from ECU.
please explain
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The DPF collects highly carcinogenic sub particles of diesel soot that the pre cat cannot collect. Without the DPF this all gets chucked straight to atmosphere where everyone you drive past gets a good lung full of pollutants, instantaneously keel over and do the dying fly, while their respiratory system turns to mush inside them. Friends, enemies, children, even ya grannies budgie. As well as a 1000 UK fine, if the law finds out its been removed, and this could be reported by your ex friendly MOT station. Also, it could invalidate your insurance.
It needs the ECU deleting to stop it trying to REGEN needlessly.
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(Post Link) post #12 of 15 Old 04-09-16 Thread Starter
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ok thanks for that so what does the ecu delete do does it just stop it regening ,i am confussed as i dont really understand all this so need help , i get a warning up every so often that its blocked and a drive down the mway clears it ,if the ecu cant tell me its blocked it could be damaging my car correct?? surely the gases still go through the dpf so it could get blocked and i wouldnt know

I know some people with 1.9 and 2.4 drill theirs out but i cant find any info on the 2.0


Last edited by corasdad; 04-09-16 at 08:29.
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Your car is just telling you to drive it like it was designed to be driven. You won't damage it and it is not getting damaged with soot. Take it to the motorway and thrash it for an hour. Don't worry about the technical stuff.
Simply, the 2.0 is better with a DPF in it, for all sorts of good reasons. If you're going to the shops a mile away, commuting a couple of miles to work or driving your kids to school, chances are the engine never gets warm and it will be full of soot... same for any diesel car (look at other car forums). Like most things in life, use it or lose it ;-)

In the 2.0 engine the DPF is right next to the engine so it works much better than the DPF in the 1.9 and 2.4. If you drill holes in it, you're immediately looking at a fail for your MOT as well as a bill for 1500 when you have to replace the DPF when you sell your car (DPF for the 2.0 is not made as an OEM part, which means that you have to buy an original one to replace it. There are NONE on eBay or in the trade of the right type, ask around!). And... your kids (if you have any) will not be thanking you for giving them lung cancer as they breathe in the exhaust when they are waiting to get into your car. Google EGR delete... that will likely tell you all you need to know. Good luck!
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Do racing cars, taxis, buses, industrial trucks e.t.c have DPFs / Cat converters?
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(Post Link) post #15 of 15 Old 04-09-16 Thread Starter
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your kids (if you have any) will not be thanking you for giving them lung cancer as they breathe in the exhaust when they are waiting to get into your car.
wow thanks
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