2005 E320 CDI EGR Delete For Off Road Purposes/Increased Fuel Economy... - Mercedes-Benz Forum
Reply
 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 03-12-2012, 06:32 PM
BenzWorld Veteran
 
Date registered: Mar 2012
Vehicle: 2005 E320 CDI
Location: Vero Beach, Fl.
Posts: 630
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
(Thread Starter)
2005 E320 CDI EGR Delete For Off Road Purposes/Increased Fuel Economy...

Fellas,

Wanted to see if any of you guys have any direct experience with the electronic circuit based EGR delete as seen here on page 13, post #121:

CDI3 EGR bypass mod - Page 13 - Mercedes-Benz Owners' Forums


Seems very worthwhile IMHO to possibly increase fuel economy, keep engine oil cleaner, and reduce the potential buildup of sludge on the swirl vanes etc. It would be super nice to be able to have this thing leave EGR fully active to retain quick warmup times, and then turn it off once a certain temperature is reached. Dynamic EGR so to speak.

Josh8loop is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 03-14-2012, 12:33 PM
BenzWorld Veteran
 
Date registered: Mar 2012
Vehicle: 2005 E320 CDI
Location: Vero Beach, Fl.
Posts: 630
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
(Thread Starter)
Looks like we have had some good input from the other thread from guys who have experience with the EGR delete mod. Perhaps we can move some of the dialogue that we had from the other thread here where it is more on topic? I'll kick it off...

Josh8loop is offline  
#3 (permalink) Old 03-14-2012, 12:36 PM
BenzWorld Veteran
 
Date registered: Mar 2012
Vehicle: 2005 E320 CDI
Location: Vero Beach, Fl.
Posts: 630
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
(Thread Starter)
Quote:
Originally Posted by isstay


"Nice video, Josh.

Did you notice any oil inside the hose going down to turbo intake while doing the surgery?

I am asking because I am dealing w/this issue, which MB says is normal, but I do not like it. Oil vapor gets to intake manifold and coats it, good thing my EGR is unplugged now and no soot can make it to the intake anymore to mix w/oil vapor and form sticky goo substance. I have been dealing w/small leak from the gasket (part #59) between intake and so-called mixing chamber ever since I purchased the car. It is fixed now (after friend made me ticker gasket), but I had the opportunities to look inside the intake while changing it and I do not like what I found – black sticky substance (like tar) above the junction between charge pipe and EGR cooler.

I even replaced the Cyclonic oil separator thinking that the pressure control valve is not functioning properly, but there is still some oil into turbo intake. "





My reply:


Actually I did notice oil in the outlet tube of the separator. It had a nice coating inside of the tubing, and it was very apparent that liquid oil is getting through. The cyclonic separator is faily effective, but certainly not 100% under all operating conditions. I may actually incorporate a lower intercooler air bleed line(1/8" ID) in the lower intercooler much like I did with my TDI to ensure that a slug of liquid oil never enters the intake tract causing hydrolock or runaway.

I am also partially concerned about the coating of oil and soot in the intake on mine too especially as it relates to the swirl flap functionality. I have read that malfunctioning/sticky swirl flaps can cause sudden onset of rough idle, and other driveability problems. I want to do my best to make sure this doesn't happen to me, and perhaps reverse some of the buildup that may have accumulated so far. Part of the solution seems to be deletion of the EGR and then the other part would be reducing CCV oil vapor entering the engine. How did you delete your EGR by the way?

Josh8loop is offline  
#4 (permalink) Old 03-14-2012, 02:54 PM
BenzWorld Member
 
Date registered: Mar 2012
Posts: 141
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Josh - prior to moving the thread you mentioning adding a circuit to turn the EGR delete on and off without CEL. Alex on the UK thread said that as long as you throw the switches separately in the correct sequence, there should be no CEL when done with the engine running. Alex was talking about adding circuitry to do just this, having the trigger be a threshold for a minimum engine temperature.

To date I don't see any attempts in the thread to do that.
Tschuss_Bill is offline  
#5 (permalink) Old 03-14-2012, 08:09 PM
BenzWorld Veteran
 
Date registered: Mar 2012
Vehicle: 2005 E320 CDI
Location: Vero Beach, Fl.
Posts: 630
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
(Thread Starter)
Quote:
Originally Posted by Tschuss_Bill View Post
Josh - prior to moving the thread you mentioning adding a circuit to turn the EGR delete on and off without CEL. Alex on the UK thread said that as long as you throw the switches separately in the correct sequence, there should be no CEL when done with the engine running. Alex was talking about adding circuitry to do just this, having the trigger be a threshold for a minimum engine temperature.

To date I don't see any attempts in the thread to do that.


Right, I do recall reading about that. It only makes sense, and with such a simple addition of a super simple relay type circuit you can have the best of both worlds. I will most likely begin to gather components together here and look into where I might install it. I have even considered making one and poting it in epoxy to keep it sealed. I haven't really poked around too much in my cars fuse boxes and all yet. I would like to familiarize myself with them, and apply some dielectric grease to the fuses and relays to keep oxidation at bay. Older cars need to have the fuses/relays wiggled around now and then to help maintain a low resistance conection between them.

Josh8loop is offline  
#6 (permalink) Old 03-23-2012, 08:09 AM
BenzWorld Veteran
 
Date registered: Mar 2012
Vehicle: 2005 E320 CDI
Location: Vero Beach, Fl.
Posts: 630
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
(Thread Starter)
Looks like I need to start gathering components. I have a large assortment of resistors to work with, so no issue there. I will also need to figure out how to use a 2N222 since they are much more common on this side of the pond. Anyone have any ideas on the 2N222 circuit?


Last edited by Josh8loop; 03-23-2012 at 08:14 AM.
Josh8loop is offline  
#7 (permalink) Old 03-23-2012, 11:48 AM
BenzWorld Veteran
 
Date registered: Mar 2012
Vehicle: 2005 E320 CDI
Location: Vero Beach, Fl.
Posts: 630
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
(Thread Starter)
Ok, after a bit of a refresh on transistor circuits I have chosen to most likely base my EGR emulator on the 2N3904 which is a very common general purpose transistor. It's also an NPN like the original BC337 in Alex Crows circuit. I went through the schematic and labeled the base, emitter, and collector so I will make sure everything is wired correctly. I will also be sure to use a location for the circuit that will also have very moderate temperature swings so resistance values and gain won't change too much.

Josh8loop is offline  
#8 (permalink) Old 03-23-2012, 03:14 PM
BenzWorld Member
 
Date registered: Mar 2012
Posts: 141
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
a friend of mine gave all the bits. the transistor was some other npn, don't recall what it was.
Tschuss_Bill is offline  
#9 (permalink) Old 03-25-2012, 07:46 AM
BenzWorld Veteran
 
Date registered: Mar 2012
Vehicle: 2005 E320 CDI
Location: Vero Beach, Fl.
Posts: 630
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
(Thread Starter)
I am going through some information on how exactly to wire the EGR emulator/delete circuit, and found the following info from Isstay:

"The intercooler tanks are flat w/it’s bottom end, so it will not hold any oil, I already check mine - empty. Yes I used the schematics from the link above, just will add one thing – all brown and red wires from engine harness end on same terminals in the fuse box (you will find bundle of red or brown wires connecting to a single big red or brown wire), does not matter which one you will tap. Wires from MAF (red/blue) and EGR (yellow/grey) needs to be traced. It work from first time, w/o any CEL. "



From this information it looks like the PWM signal is taken from the EGR wire that is Yellow/Grey(EGR Pin 1). Can some one confirm this. I have all of the other wires pretty much figured out as far as where I will tap them etc, but the PWM wire I am uncertain about. I'm looking forward to getting this up and running fairly soon hopefully. Once I have the technical construction side of things figured out it should progress fairly quickly. Maybe I will make a video of the construction/install when it is all done.



..


Last edited by Josh8loop; 03-25-2012 at 08:10 AM.
Josh8loop is offline  
#10 (permalink) Old 03-25-2012, 09:17 AM
BenzWorld Member
 
Date registered: Mar 2012
Posts: 141
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by Josh8loop View Post
I am going through some information on how exactly to wire the EGR emulator/delete circuit, and found the following info from Isstay:

"The intercooler tanks are flat w/it’s bottom end, so it will not hold any oil, I already check mine - empty. Yes I used the schematics from the link above, just will add one thing – all brown and red wires from engine harness end on same terminals in the fuse box (you will find bundle of red or brown wires connecting to a single big red or brown wire), does not matter which one you will tap. Wires from MAF (red/blue) and EGR (yellow/grey) needs to be traced. It work from first time, w/o any CEL. "



From this information it looks like the PWM signal is taken from the EGR wire that is Yellow/Grey(EGR Pin 1). Can some one confirm this. I have all of the other wires pretty much figured out as far as where I will tap them etc, but the PWM wire I am uncertain about. I'm looking forward to getting this up and running fairly soon hopefully. Once I have the technical construction side of things figured out it should progress fairly quickly. Maybe I will make a video of the construction/install when it is all done.



..
That is consistent with my understanding. Use an ohmmeter to confirm.

-Bill
Tschuss_Bill is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W211 E-Class

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Topic Author Forum Replies Last Post
E320 CDI Fuel Economy Decrease zeroohm W211 E-Class 12 01-04-2010 12:43 PM
E320 Fuel economy drop inthwtr W211 E-Class 2 07-05-2009 02:11 PM
'07 E320 Bluetec EPA Fuel Economy BrianMcGann W211 E-Class 2 02-11-2007 01:20 AM
Fuel Economy E420 vs. E320 Daskoff W124 E,CE,D,TD Class 6 01-13-2006 06:55 AM
Increased fuel economy...... GwagenLover G-Class 26 11-19-2005 12:00 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome