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EGR delete... any info/advice

11K views 43 replies 11 participants last post by  Cuore_Sportivo_155 
#1 ·
Thinking of deleting EGR. But with a hole in the blanking plate to keep EML off. Pros and cons from G owners please...
 
#2 ·
With a hole in the EGR you are not deleting it, rather than restricting it. Some of the improvements, but not all. I did this job on my 2.0 140bhp, and it did offer an improvement, I have purchased the plate for my 170bhp 2.0 but yet to do it.
It's a pig of a job, but worth doing! I've written a guide on here somewhere! :) If you intend to keep the car long term, then I would recomend a full blank and map
 
#27 ·
Alfa did supply & fit a blanking plate to the EGR with 4 holes - this was fitted between the EGR and manifold, as it was supplied and fitted by Alfa it did not affect warranty.
Bit pointless in my opinion, you either blank it and map it out or don't bother, there's no half way house.
 
#28 ·
It was IMPOSED on manufacturers by the EU. It made things worse in the long run, killed engines, cost customers time & money correcting the poor design and finally when they do start to go wrong cars just pump out even more smoke.
people, especially in government, should look into these additions and what benefit they actually have long term?
 
#15 ·
The inclusion of EGR and DPF on the Alfa diesel engines mean that they meet the Euro 5 standard and are actually pretty good when it comes to emissions. Don't let the recent media hype sway your judgement diesel engines are still being made and are here to stay for the foreseeable future. If your EGR fails a blanking plate will not remove the engine light(MIL) on the dash. The ECU commands the valve to do something and the valve needs to report it has done so, my car stopped doing this and I had to change the EGR to stop getting the MIL light.
 
#20 ·
You could argue that by blanking the EGR you will improve fuel consumption and reduce CO2 and Global warming.

The EGR reduces the temperature of the combustion gases, which means that less Nitrogen Oxide is produced. But as Diesel burns more efficiently at higher temps you loose power and economy.

Hence why VAG cheated, they wanted their cars to offer the best of both which is impossible.
 
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#30 · (Edited)
EGRs are great new, shall I re-phrase that?! EGRs are great for NOX emissions when new.
As mentioned, they make the MPG worse, they also increase particulate emissions, increasing the need for DPFs.
Longer term I would contest they are bad for the environment.
Remember they effectively work by putting the exhaust (very hot and sooty air) into the engine manifold.
Take out your MAP sensor, its along the back of the manifold at the back (see the image below). Without an EGR (or with it blanked) it would have a thin film of oil on it. Instead you have a thick sludge/ deposits. This coats EVERYTHING in the manifold, from the butterfly valve (restricting air into the manifold), the manifold, the inlets to the engine valves, the valves, and swirl flaps where fitted (which often leads to them failing).

All this means is that after 20-30k, the engine will start suffering and performance (both the 'fun' part and the environmental part) will start degrading.
Remember DPFs have a finite life, the more they clog up the shorter this will be, EGRs increase the clogging, especially when the manifold clogs up).

The good news?! The 2.0jtdm has an improved EGR with a cooler built in (so it's more just sooty air going in). The older 1.9 and 2.4JTDM were notorious for EGR failures! However there is still some associated turbo lag.

http://s1281.photobucket.com/user/xrturbopilot/media/file_zps9b01ebe0.jpg.html
 
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#41 ·
EGRs are great new, shall I re-phrase that?! EGRs are great for NOX emissions when new.
As mentioned, they make the MPG worse, they also increase particulate emissions, increasing the need for DPFs.
Longer term I would contest they are bad for the environment.
Remember they effectively work by putting the exhaust (very hot and sooty air) into the engine manifold.
Take out your MAP sensor, its along the back of the manifold at the back (see the image below). Without an EGR (or with it blanked) it would have a thin film of oil on it. Instead you have a thick sludge/ deposits. This coats EVERYTHING in the manifold, from the butterfly valve (restricting air into the manifold), the manifold, the inlets to the engine valves, the valves, and swirl flaps where fitted (which often leads to them failing).

All this means is that after 20-30k, the engine will start suffering and performance (both the 'fun' part and the environmental part) will start degrading.
Remember DPFs have a finite life, the more they clog up the shorter this will be, EGRs increase the clogging, especially when the manifold clogs up).

The good news?! The 2.0jtdm has an improved EGR with a cooler built in (so it's more just sooty air going in). The older 1.9 and 2.4JTDM were notorious for EGR failures! However there is still some associated turbo lag.

file_zps9b01ebe0.jpg Photo by xrturbopilot | Photobucket
I'll take out my MAP sensor tomorrow at noon and take a picture of it. I have a working EGR and about 55k miles on the engine.
 
#33 ·
Is the MPG that bad that it needs improving?

I've no idea on either points tbh as it's never bothered me enough to look into it - the car has the parts fitted for regulatory reasons and seen as they've worked absolutely fine on all four Fiat/Alfa JTDs i've owned (2 x 1.9's, 1 x 1.3 and 1 x 1.6) I don't plan to modify them.

I know I take a very dim view of VW's behaviour, so surely doing something like removing the EGR or DPF would make me just as bad as them? I'll therefore give it a miss. I would also anticipate (and hope tbh) that Alfa reject any associated warranty repairs if the car's been modified in this way.
 
#35 ·
I find myself getting intollerably wound-up by things like this - I own a diesel and accept that for the brilliant fuel consumption and low down torque I get something which is a bit rough when cold. If the fact it sounds like a tractor first thing in the morning bothered me that much, I'd just buy a petrol and accept the pitfalls that brings in terms of lower MPG.

I can understand people wanting to remove EGR's & DPFs etc when they cause problems, like on some early applications (Alfa 159 for example) but when they work as well as they do on Fiat Groups current models, why bother trying to change things? Crazy.
 
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