DEF (SCR) DELETE
Thread Starter
Newbie
Joined: May 2008
Posts: 13
Likes: 1
S350 2012 w221 -E350 W212
DEF (SCR) DELETE
spent $3000 cnd on the emissions Jan and Feb 2021....
Have E350 and S350.....both 2012
Sent out both DPF for cleaning....swirl motors.....P20E8 code on the S350.
can't pull the code on the E350.
Now ADBLUE comes on both cars but no count down....
I was told I should do a DEF Delete only.....and the cars will still regen.
Is it fact...can i only do the DEF SCR delete ?
Will t still regen?
Long distance driving 90 % highway.
any input is much appreciated......
Have E350 and S350.....both 2012
Sent out both DPF for cleaning....swirl motors.....P20E8 code on the S350.
can't pull the code on the E350.
Now ADBLUE comes on both cars but no count down....
I was told I should do a DEF Delete only.....and the cars will still regen.
Is it fact...can i only do the DEF SCR delete ?
Will t still regen?
Long distance driving 90 % highway.
any input is much appreciated......
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,224
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
Before you decide to go for delete, read about AEM settlement in USA, who gives huge benefits to Bluetec owners.
No guarantee Canada (?) will follow, but something to consider.
Other thing is do you do system monitoring. DPF , even it might be consider wearable can last 200,000 miles when owners monitors regenerations and don't abort them too often.
DEF system on sedans do have relatively cheap parts, so it not suppose to cost very much.
Lastly, even per my experience, when MB diesels don't emit much particulates, so DPF is not doing much, the SCR system cuts the poisonous gases a lot and this is something you breathe.
I have DPF delete in 1 of my sedans, where SCR still works. Car passes NV smog test with 0 particulate reading.
Now I am working on restoring the sedan to original specifications.
My understanding is that DPF and SCR are independent systems doing different jobs, so fully separable.
No guarantee Canada (?) will follow, but something to consider.
Other thing is do you do system monitoring. DPF , even it might be consider wearable can last 200,000 miles when owners monitors regenerations and don't abort them too often.
DEF system on sedans do have relatively cheap parts, so it not suppose to cost very much.
Lastly, even per my experience, when MB diesels don't emit much particulates, so DPF is not doing much, the SCR system cuts the poisonous gases a lot and this is something you breathe.
I have DPF delete in 1 of my sedans, where SCR still works. Car passes NV smog test with 0 particulate reading.
Now I am working on restoring the sedan to original specifications.
My understanding is that DPF and SCR are independent systems doing different jobs, so fully separable.
Thread Starter
Newbie
Joined: May 2008
Posts: 13
Likes: 1
S350 2012 w221 -E350 W212
Before you decide to go for delete, read about AEM settlement in USA, who gives huge benefits to Bluetec owners.
No guarantee Canada (?) will follow, but something to consider.
Other thing is do you do system monitoring. DPF , even it might be consider wearable can last 200,000 miles when owners monitors regenerations and don't abort them too often.
DEF system on sedans do have relatively cheap parts, so it not suppose to cost very much.
Lastly, even per my experience, when MB diesels don't emit much particulates, so DPF is not doing much, the SCR system cuts the poisonous gases a lot and this is something you breathe.
I have DPF delete in 1 of my sedans, where SCR still works. Car passes NV smog test with 0 particulate reading.
Now I am working on restoring the sedan to original specifications.
My understanding is that DPF and SCR are independent systems doing different jobs, so fully separable.
No guarantee Canada (?) will follow, but something to consider.
Other thing is do you do system monitoring. DPF , even it might be consider wearable can last 200,000 miles when owners monitors regenerations and don't abort them too often.
DEF system on sedans do have relatively cheap parts, so it not suppose to cost very much.
Lastly, even per my experience, when MB diesels don't emit much particulates, so DPF is not doing much, the SCR system cuts the poisonous gases a lot and this is something you breathe.
I have DPF delete in 1 of my sedans, where SCR still works. Car passes NV smog test with 0 particulate reading.
Now I am working on restoring the sedan to original specifications.
My understanding is that DPF and SCR are independent systems doing different jobs, so fully separable.
