Delete Adblue, SCR, DPF question
Thread Starter
Junior Member
Joined: Jul 2011
Posts: 54
Likes: 1
2005 C55 AMG; 2000 CLK320 Cabriolet, 2000 C230 Kompressor & 2001 ML430
Delete Adblue, SCR, DPF question
If I where to tune out the Adblue, SCR, DPF do I have to remove the exhaust components, or can I just leave them there?
thanks
thanks
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,224
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
Depends on the state - removing them will fail the visual inspection. Lot of owners say they don't have smog at their county, but those laws keep coming, so if you plan to keep the car for few years, better be ready for them.
Best IMHO way to do it is chisel out DPF honeycombs. That is what I did.
Best IMHO way to do it is chisel out DPF honeycombs. That is what I did.
Thread Starter
Junior Member
Joined: Jul 2011
Posts: 54
Likes: 1
2005 C55 AMG; 2000 CLK320 Cabriolet, 2000 C230 Kompressor & 2001 ML430
Not to worried on the visual,
So the exhaust components is just the dpf?
i could chisel it out, just can’t immediately do it, can it run sometime with it on without any issues ?
Thanks
So the exhaust components is just the dpf?
i could chisel it out, just can’t immediately do it, can it run sometime with it on without any issues ?
Thanks
Depends on the state - removing them will fail the visual inspection. Lot of owners say they don't have smog at their county, but those laws keep coming, so if you plan to keep the car for few years, better be ready for them.
Best IMHO way to do it is chisel out DPF honeycombs. That is what I did.
Best IMHO way to do it is chisel out DPF honeycombs. That is what I did.
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,224
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
You don't have any diesel listed in your profile and you did not say what engine you have in mind?
When DPF removal on OM651 is child's play, doing so on OM642 is quite a task.
Driving it with honeycombs and DPF delete will eventually clog the DPF, so don't plan on doing it long.
When DPF removal on OM651 is child's play, doing so on OM642 is quite a task.
Driving it with honeycombs and DPF delete will eventually clog the DPF, so don't plan on doing it long.
Thread Starter
Junior Member
Joined: Jul 2011
Posts: 54
Likes: 1
2005 C55 AMG; 2000 CLK320 Cabriolet, 2000 C230 Kompressor & 2001 ML430
You don't have any diesel listed in your profile and you did not say what engine you have in mind?
When DPF removal on OM651 is child's play, doing so on OM642 is quite a task.
Driving it with honeycombs and DPF delete will eventually clog the DPF, so don't plan on doing it long.
When DPF removal on OM651 is child's play, doing so on OM642 is quite a task.
Driving it with honeycombs and DPF delete will eventually clog the DPF, so don't plan on doing it long.
and a 2011 E350
both bluetec
Junior Member
Joined: Jun 2019
Posts: 45
Likes: 5
From: GTA
W212 Bluetec
Buzzken makes replacement pipe, which Im sure any exhaust shop can also fabricate.. They don’t make one for one for E350, which is also what I have..
I also plan on replacing mine one day, but for now everything works..
the one tune will just disable the bluetec system (nox sensors, SCR, and uria spray) But also option for full delete (EGR, swirl flaps, DPF)
Im not sure why everyone hates on the OM642 engines due to emissions if it can all be simply,
removed..😀 In reality it will be same as the older generation cars..
I also plan on replacing mine one day, but for now everything works..
the one tune will just disable the bluetec system (nox sensors, SCR, and uria spray) But also option for full delete (EGR, swirl flaps, DPF)
Im not sure why everyone hates on the OM642 engines due to emissions if it can all be simply,
removed..😀 In reality it will be same as the older generation cars..
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MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,224
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
I sold my pre-DEF OM642 with almost 190k miles and know the buyer, so the engine performs well and having records from original owner - still original DPF.
Lot of things come to play in last years.
Now you can buy ScanGauge, who will monitor soot build-up and tell you regeneration status. That sure can avoid lot of troubles when you observe it and make extra loop to avoid shutting the engine down with pending regeneration.
MB also shoot itself in the foot with making complicated unit for DEF tank. Small heater burn out cost a fortune for whole unit replacement, than SCN coding comes to play.
On older diesel you can have new O2 sensor for about $100.
On DEF -equipement cars you have two Ox sensor, who replaced in pair can run you $1800 at stealer. Not much to love when it comes to it.
Lot of things come to play in last years.
Now you can buy ScanGauge, who will monitor soot build-up and tell you regeneration status. That sure can avoid lot of troubles when you observe it and make extra loop to avoid shutting the engine down with pending regeneration.
MB also shoot itself in the foot with making complicated unit for DEF tank. Small heater burn out cost a fortune for whole unit replacement, than SCN coding comes to play.
On older diesel you can have new O2 sensor for about $100.
On DEF -equipement cars you have two Ox sensor, who replaced in pair can run you $1800 at stealer. Not much to love when it comes to it.
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Junior Member
Joined: Jun 2019
Posts: 45
Likes: 5
From: GTA
W212 Bluetec
I had weekly CEL for pre SCR nox sensor..
I monitored the results on scan gauge and it would randomly spike for high ppm.. The secondary sensor worked fine..
Like you said the sensor at the dealer quoted me $850 plus tax for just the sensor..
I found an aftermarket part for $75 with shipping and it has worked flawlessly for the past few months..I just had to splice in the new sensor to old module (8wires)
The sensor readings are now much more stable with very quick response ( for example once you let off throttle)
I completely agree, these cars need long highway drives and cannot be treated as a short distance city car..
I monitored the results on scan gauge and it would randomly spike for high ppm.. The secondary sensor worked fine..
Like you said the sensor at the dealer quoted me $850 plus tax for just the sensor..
I found an aftermarket part for $75 with shipping and it has worked flawlessly for the past few months..I just had to splice in the new sensor to old module (8wires)
The sensor readings are now much more stable with very quick response ( for example once you let off throttle)
I completely agree, these cars need long highway drives and cannot be treated as a short distance city car..
Last edited by 00Coupe; Dec 8, 2019 at 12:34 PM.
Senior Member
Joined: Jul 2017
Posts: 487
Likes: 114
From: DFW, TX
Ml350 bluetec
I had weekly CEL for pre SCR nox sensor..
I monitored the results on scan gauge and it would randomly spike for high ppm.. The secondary sensor worked fine..
Like you said the sensor at the dealer quoted me $850 plus tax for just the sensor..
I found an aftermarket part for $75 with shipping and it has worked flawlessly for the past few months..I just had to splice in the new sensor to old module (8wires)
The sensor readings are now much more stable with very quick response ( for example once you let off throttle)
I completely agree, these cars need long highway drives and cannot be treated as a short distance city car..
I monitored the results on scan gauge and it would randomly spike for high ppm.. The secondary sensor worked fine..
Like you said the sensor at the dealer quoted me $850 plus tax for just the sensor..
I found an aftermarket part for $75 with shipping and it has worked flawlessly for the past few months..I just had to splice in the new sensor to old module (8wires)
The sensor readings are now much more stable with very quick response ( for example once you let off throttle)
I completely agree, these cars need long highway drives and cannot be treated as a short distance city car..
Thread Starter
Junior Member
Joined: Jul 2011
Posts: 54
Likes: 1
2005 C55 AMG; 2000 CLK320 Cabriolet, 2000 C230 Kompressor & 2001 ML430
So you did the tune on the e class with removing anything?
Thanks
Thanks
Buzzken makes replacement pipe, which Im sure any exhaust shop can also fabricate.. They don’t make one for one for E350, which is also what I have..
I also plan on replacing mine one day, but for now everything works..
the one tune will just disable the bluetec system (nox sensors, SCR, and uria spray) But also option for full delete (EGR, swirl flaps, DPF)
Im not sure why everyone hates on the OM642 engines due to emissions if it can all be simply,
removed..😀 In reality it will be same as the older generation cars..
I also plan on replacing mine one day, but for now everything works..
the one tune will just disable the bluetec system (nox sensors, SCR, and uria spray) But also option for full delete (EGR, swirl flaps, DPF)
Im not sure why everyone hates on the OM642 engines due to emissions if it can all be simply,
removed..😀 In reality it will be same as the older generation cars..
Junior Member
Joined: Jun 2019
Posts: 45
Likes: 5
From: GTA
W212 Bluetec
I have not done a tune.. My car is all stock other than the sensor replacement above..
If I start having issues with bluetec or DPF, its all coming out and a tune will be done at that point..
I do mostly long highway driving, so i foresee this system working a long time.. Currently 215,000km
If I start having issues with bluetec or DPF, its all coming out and a tune will be done at that point..
I do mostly long highway driving, so i foresee this system working a long time.. Currently 215,000km
