EGR/DPF/DEF/Swirl Flaps delete - Remove the original cat or not?
Thread Starter
Senior Member
Joined: Nov 2015
Posts: 276
Likes: 49
From: Ottawa, Ontario
2013 ML350 Bluetec, 1966 Ford Mustang Convertible (sold)
EGR/DPF/DEF/Swirl Flaps delete - Remove the original cat or not?
So my BIL is throwing in the white towel with his 2013 ML350 Bluetec. He's going delete route with a Malone tune. He has a couple of questions:
1- For the best fuel economy, do you go with a stock tune or stage 1/2? Seems obvious to me that the stock tune would be the best for fuel economy but I just want to make sure.
2- Do you keep the original cat or do you remove everything? Will this affect anything beside the smell (fuel economy, risk of clogging because of soot, etc.)?
Thanks everyone.
1- For the best fuel economy, do you go with a stock tune or stage 1/2? Seems obvious to me that the stock tune would be the best for fuel economy but I just want to make sure.
2- Do you keep the original cat or do you remove everything? Will this affect anything beside the smell (fuel economy, risk of clogging because of soot, etc.)?
Thanks everyone.
MBWorld Fanatic!
Joined: May 2017
Posts: 1,234
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From: Montreal/Cape Coral FL
2012 X6 35i Sport, 2013 ML 350 BT, 2019 4Runner TRD Pro, 2020 CRV-AWD
I can only comment on my own experience.
EGR/DEF/DPF delete, kept the cat due to the promise of stink if removed. Stock tune, going for reliability .
Wife believes that she now goes slightly further on a full tank. Very happy to date.
EGR/DEF/DPF delete, kept the cat due to the promise of stink if removed. Stock tune, going for reliability .
Wife believes that she now goes slightly further on a full tank. Very happy to date.
Member
Joined: Nov 2014
Posts: 245
Likes: 8
2008 gl320cdi
I used GDE...,With an eco tune. I had hoped for much better fuel economy but it may be my vehicle as driving interstate @75mph I usually avg about 22-23 mpg in Louisiana.
I can admit there there is more smell with the dpf removed. I went with a cb engineering pipe replacement. However the acceleration is much improved. In time I hope to add their egr delete if/when I go after the oil cooler seals. I will also send them the intake manifolds for cleaning/port matching removal of flaps and welding up of swirl motor ports.
I can admit there there is more smell with the dpf removed. I went with a cb engineering pipe replacement. However the acceleration is much improved. In time I hope to add their egr delete if/when I go after the oil cooler seals. I will also send them the intake manifolds for cleaning/port matching removal of flaps and welding up of swirl motor ports.
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
The withe car in my footnote has DPF delete. No smell, but as you can see - it burns more fuel. Cars were driven differently, so the small difference can be due different driving style, but don't expect improvements in fuel economy.
Junior Member
Joined: Jun 2015
Posts: 43
Likes: 4
2013 E350 Bluetec
On my 2009 GL 320 I went with JR Autotunning through TuneMyEuro. Did the full stage 2 off road use only. I gutted the CAT, DPF, and adblue system myself. The vehicle runs great. My gas mileage is around 23. Very happy. There is a smell but no visable smoke.
I am still working on my 2013 E350. Did the same tune but added the CB Engineering EGR Delete kit. I had major issues the last couple of days but I went back in and added the swirl valve actuator (Swirl valves have been removed and welded up) and reconnected the pipe between the exhaust and intake manifold at the EGR valve so I could get the EGT sensor back in its original position. Just finished it. The car runs GREAT but I still have several codes. It is really surprising how well it pulls. However, I did have major carbon build up in my manifold. Once I get the Check Engine Light resolved I think I am going to be really happy.
I am still working on my 2013 E350. Did the same tune but added the CB Engineering EGR Delete kit. I had major issues the last couple of days but I went back in and added the swirl valve actuator (Swirl valves have been removed and welded up) and reconnected the pipe between the exhaust and intake manifold at the EGR valve so I could get the EGT sensor back in its original position. Just finished it. The car runs GREAT but I still have several codes. It is really surprising how well it pulls. However, I did have major carbon build up in my manifold. Once I get the Check Engine Light resolved I think I am going to be really happy.
Member
Joined: Apr 2012
Posts: 139
Likes: 8
From: Space Coast Florida
2008 E320 Bluetec
GDE ECO tune mileage is up.
I have a 2008 E320 and did the Green diesel ECO tune. I can say that according to my onboard mileage computer fuel mileage at highway speed is up
To test it I reset the mileage computer while driving at 70 MPH and give it about 1/2 hour to settle in on the average speed.
With the stock tune, it went to about 30 to 32 MPG. After the tune, it goes to 36 to 39 MPH.
No DPF or Cats deletes.
Due to other problems undetermined and unrelated to the tune, the car does not run well at all but once it is up to speed it runs great until the turbo shuts down. Lasts for hours sometimes and only minutes other times.
To test it I reset the mileage computer while driving at 70 MPH and give it about 1/2 hour to settle in on the average speed.
With the stock tune, it went to about 30 to 32 MPG. After the tune, it goes to 36 to 39 MPH.
No DPF or Cats deletes.
Due to other problems undetermined and unrelated to the tune, the car does not run well at all but once it is up to speed it runs great until the turbo shuts down. Lasts for hours sometimes and only minutes other times.
Last edited by IBelieve; Jun 16, 2019 at 05:35 PM.
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MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
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From: V E G A S
1922 Ford Model T / no OBD
They glue "alike" topics at the bottom of what you are reading.
Quite often on long topic I scroll down being in diesel section, only to find out that I jumped down and now I am at "FOR SALE" with linked topic.
Some smart *** moderation combined with hardcore sale pitching.
Quite often on long topic I scroll down being in diesel section, only to find out that I jumped down and now I am at "FOR SALE" with linked topic.
Some smart *** moderation combined with hardcore sale pitching.
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Member
Joined: Apr 2012
Posts: 139
Likes: 8
From: Space Coast Florida
2008 E320 Bluetec
Thanks kajtek1, never understood that before.
Back to the original post. When reading this I realized I had not followed up with the answer to the "unrelated problems" I mentioned in this thread. Turned out that my Turbo Actuator was bad and not opening and or closing as signaled by the computer. I replaced it and it works great. Although now my miles per gallon consistently sett into about 36.5 when doing the above mentioned testing. Again, that's according to the on board mileage computer. I did not take into consideration temperature and or humidly conditions (which vary widely here in South Florida) which may have also varied the results.
Back to the original post. When reading this I realized I had not followed up with the answer to the "unrelated problems" I mentioned in this thread. Turned out that my Turbo Actuator was bad and not opening and or closing as signaled by the computer. I replaced it and it works great. Although now my miles per gallon consistently sett into about 36.5 when doing the above mentioned testing. Again, that's according to the on board mileage computer. I did not take into consideration temperature and or humidly conditions (which vary widely here in South Florida) which may have also varied the results.
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
As expected, the government is tracking emission bypasses and here is what is happening with 1 of the tuner in California.
I am stumped how my car with DPF delete measured 0 particles on NV smog check, but I will not complain about it
I am stumped how my car with DPF delete measured 0 particles on NV smog check, but I will not complain about it
Member
Joined: Dec 2019
Posts: 187
Likes: 45
2008 R320 CDI 4MATIC
[SNIP}.......
"I am still working on my 2013 E350. Did the same tune but added the CB Engineering EGR Delete kit. I had major issues the last couple of days but I went back in and added the swirl valve actuator (Swirl valves have been removed and welded up) and reconnected the pipe between the exhaust and intake manifold at the EGR valve so I could get the EGT sensor back in its original position. Just finished it. The car runs GREAT but I still have several codes. It is really surprising how well it pulls. However, I did have major carbon build up in my manifold. Once I get the Check Engine Light resolved I think I am going to be really happy."
"I am still working on my 2013 E350. Did the same tune but added the CB Engineering EGR Delete kit. I had major issues the last couple of days but I went back in and added the swirl valve actuator (Swirl valves have been removed and welded up) and reconnected the pipe between the exhaust and intake manifold at the EGR valve so I could get the EGT sensor back in its original position. Just finished it. The car runs GREAT but I still have several codes. It is really surprising how well it pulls. However, I did have major carbon build up in my manifold. Once I get the Check Engine Light resolved I think I am going to be really happy."
When you physically removed the ERG and swirl valve, did you also remove those from the software / delete from software?
Thank you
Joseph~
