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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > EGR Block-Off Install



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      04-28-2014, 03:35 PM   #67
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      04-28-2014, 10:42 PM   #68
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I am really mad at my car, the dealer, BMW, BMWNA, etc. I am in fact looking at buying a car to replace this german garbage.

I am really willing to give the blanking plates a chance, however my car has been diagnosed already with CBU. I am not ready to pay more than $4000 in cleaning fees as the dealer said today.

Would blocking the EGR valve help reduce the CBU while running additives?
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      04-28-2014, 10:57 PM   #69
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Quote:
Originally Posted by dixy2k View Post
I am really mad at my car, the dealer, BMW, BMWNA, etc. I am in fact looking at buying a car to replace this german garbage.

I am really willing to give the blanking plates a chance, however my car has been diagnosed already with CBU. I am not ready to pay more than $4000 in cleaning fees as the dealer said today.

Would blocking the EGR valve help reduce the CBU while running additives?
Blocking the EGR would help prevent future CBU but that's about it. Not sure what you mean by "additives" that can clean it out. One thing that will work is installing a meth injection kit, that has been proven by a few members to clean CBU while adding power as well.
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      04-28-2014, 10:58 PM   #70
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I've been using the gray bottle, diesel kleen I think.
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      04-28-2014, 11:08 PM   #71
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Quote:
Originally Posted by dixy2k View Post
I've been using the gray bottle, diesel kleen I think.
Yea, that won't do anything. It may help the injection system last longer and stay cleaner, maybe even better fuel mileage. But the only way anything would get into the intake is through the EGR and by then it is already burned.

Have a meth injection kit installed and drive the car. It will clean itself. I am considering one just for that reason as well.
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      04-28-2014, 11:16 PM   #72
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Last time I read about it, nobody sells the kit anymore. Is this still true?
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      04-28-2014, 11:20 PM   #73
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Quote:
Originally Posted by dixy2k View Post
Last time I read about it, nobody sells the kit anymore. Is this still true?
I would start a new thread on that. I'd be curious to see what options there are for kits that will work on our cars as well...
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      04-28-2014, 11:23 PM   #74
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Just checked out JB website. They are in CA and do not sell this kit in CA. It is the gasoline version, not sure if there is a different one for diesels.
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      04-29-2014, 01:37 AM   #75
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Quote:
Originally Posted by TDIwyse View Post
You should see these BMW specific codes when you scan:

4B82 Exhaust recirculation-rate control,control deviation
4862 Air system, air to EGR mass flow,plausibility

The Ecotune remap can take care of those if you ask for it...
I'm also getting a 45B7, which from my search relates to a temp sensor plausibility. After reset these three are coming back. So, with the tune we should be good to go.
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      04-30-2014, 10:39 AM   #76
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Iaknown, my 2010 with 51k miles has been in the Dealer now for 3 weeks for the CBU. Found this thread after researching for possible fixes to this problem, now it seems like you have provided light at the end of the tunnel! I will PM you for my Off-road kit
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      04-30-2014, 05:19 PM   #77
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Does your dealer charge you for carbon build up cleaning?
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      05-04-2014, 11:19 PM   #78
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Quote:
Originally Posted by dixy2k View Post
Fapilot
Does your dealer charge you for carbon build up cleaning?
Dixy2k
No BMW is taking care of it but I was only about 2k outta warranty. My SA did tell me that they have another 335d in right now for the same thing and they are about $10k into that car. He definitely acknowledge an issue with them. On a side note my car has been in for close to a month now. Since 4/08. I am currently on my second loaner with no set complete date in site.

Last edited by Fapilot; 05-04-2014 at 11:20 PM.. Reason: Spelling
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      05-06-2014, 11:15 AM   #79
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damn that sucks
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      05-06-2014, 02:37 PM   #80
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I have an appointment with a different dealer n the 14th. We'll see what they say.
I will have to wait till afterwards to look into the EGR valve.
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      05-06-2014, 05:47 PM   #81
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Who makes the EGR delete kit, I read all the posts but no mention on where and how to get the kit...
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      05-06-2014, 05:48 PM   #82
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Who makes the EGR delete kit, I read all the posts but no mention on where and how to get the kit...
PM me.....
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      05-07-2014, 12:21 AM   #83
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PM me.....
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      05-07-2014, 04:05 PM   #84
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Just curious. Has anyone tried to unplug or cut off electrical connection to EGR valve? Assuming default valve position should be closed if unpowered? SW is another option but would like to explore this possibility as well.
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      05-07-2014, 04:32 PM   #85
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There are guys they have even tuned them out, but you still need a physical block off to avoid possible issues with cracked EGR coolers and hydrolocking the engine. Physical block off is the easiest to do, then tune it out.
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      05-07-2014, 04:52 PM   #86
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Hi guys

Interesting read through this thread, seems to be all positives from removing the cooler. Someone whos had more experience with me than this may be able to help (im a new owner), but is there any reason we could just get 2 flanges laser cut to remove the EGR system? So instead of messing about with blocking plates (i apreciate some may need this as you may need to appear to have the system) you just pull the whole lot off and bolt on 2 new blocked flanges?

Like this:



Just wondering as i have access to a laser cutter so say, if someone could give me dimensions, i could draw it up in CAD and have some bits made.
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      05-07-2014, 04:58 PM   #87
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You would also need to reroute cooling lines and short the sensors. This is why the easy way is to block it off.
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      05-07-2014, 05:05 PM   #88
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Yeah, but it looks like rerouting the coolant is basically one hose, and if this mod is being done then the owner has probably had bits coded before.

I just mention it as i have access to a laser cutter, so i could get bits made for myself pretty much for free and could also potentially get bits made for others too.
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