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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 > walnut blasting



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      04-27-2015, 09:37 AM   #1
melonbread
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walnut blasting

has anyone performed this on your 335d? opinions?
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      04-27-2015, 09:59 AM   #2
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Many have.. mostly documented under the various CBU threads. Opinion is it's expensive, it works at treating the symptoms, but fails at addressing the root cause.
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      04-27-2015, 10:44 AM   #3
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i've been hearing $250 for walnut blasting... sounds like reasonable cost from all the positive feedback perspective.
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      04-27-2015, 11:31 AM   #4
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Quote:
Originally Posted by melonbread View Post
i've been hearing $250 for walnut blasting... sounds like reasonable cost from all the positive feedback perspective.
From where?! You can only get that kind of pricing if you had a gasser in a group buy.
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      04-27-2015, 11:40 AM   #5
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Quote:
Originally Posted by AzureHaze View Post
From where?! You can only get that kind of pricing if you had a gasser in a group buy.
found a local group pricing here in Austin TX.
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      04-27-2015, 12:01 PM   #6
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Quote:
Originally Posted by melonbread View Post
found a local group pricing here in Austin TX.
Melonbread, the unspoken hint here is that the process for our D engine is different than that for the petrol engine, largely due to architectural differences for lack of a better word. Hence, the $250 price likely will not apply to you.
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      04-27-2015, 06:11 PM   #7
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Quote:
Originally Posted by melonbread View Post
found a local group pricing here in Austin TX.
Who in Austin is doing it?
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      04-27-2015, 06:16 PM   #8
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Quote:
Originally Posted by stevers314 View Post
Who in Austin is doing it?
Spoke too soon. He said only 335i but will see if he can do diesel.
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      04-27-2015, 10:51 PM   #9
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maybe for a DIY.
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      04-28-2015, 06:15 PM   #10
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He will need other adapter wands for the 335d as the intake runs are differently shaped than that of the gassers. Once he does his first CBU cleaning on a 335d, he'll double that $250 price point.
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      04-28-2015, 08:28 PM   #11
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Even at $500 that would be a good deal. Heck I might be willing to go get a cleaning just to see what things look like at 100k miles with an EGR delete
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      04-28-2015, 08:33 PM   #12
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Cheapest I recall for our Ds is ~$800 from an Indy who knows what he's doing
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      04-30-2015, 12:45 AM   #13
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Quote:
Originally Posted by melonbread View Post
has anyone performed this on your 335d? opinions?
I have done it. There are lots of photos close by.
It is a slow, tedious process, but not hard.

The walnut blast is just part of the work. You need to send the intake out for cleaning, not blast the valve cover and give that an acetone scrub, clean the EGR, and then have the mass rebalance done to reset the injectors.

Change the boost hose seals if they are leaking. You have it all apart anyway and those a just a few bucks. Also change all the easy vacuum hoses, which is cheap when all the parts are already disassembled.
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      07-31-2015, 01:54 PM   #14
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Quote:
Originally Posted by command_liner View Post
I have done it. There are lots of photos close by.
It is a slow, tedious process, but not hard.

The walnut blast is just part of the work. You need to send the intake out for cleaning, not blast the valve cover and give that an acetone scrub, clean the EGR, and then have the mass rebalance done to reset the injectors.

Change the boost hose seals if they are leaking. You have it all apart anyway and those a just a few bucks. Also change all the easy vacuum hoses, which is cheap when all the parts are already disassembled.
Do you have a full write up posted anywhere? Thanks!
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      07-31-2015, 07:28 PM   #15
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Quote:
Originally Posted by 1edyson View Post
Do you have a full write up posted anywhere? Thanks!
Look for the SIB. Searching for "SIB CBU" will probably do it.
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      07-31-2015, 07:40 PM   #16
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Quote:
Originally Posted by 1edyson View Post
Do you have a full write up posted anywhere? Thanks!
Here's the one that Lee4him and I did:
http://www.e90post.com/forums/showth...ight=CBU+clean
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      08-03-2015, 07:17 AM   #17
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Just picked up my car from the dealership, where they sent out the intake manifold for walnut blasting.
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      08-03-2015, 10:27 AM   #18
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Are you sure they were blasting plastic intake?

I did mine just using chemicals, went out good enough.
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      08-03-2015, 04:42 PM   #19
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off topic but i'll post here... so don't kill me.

can you anyone link me the post on how to install egr block off kit? step by step for rookies? i'm thinking of finally opening my hood this weekend.
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      08-06-2015, 11:14 AM   #20
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I found it 11 threads down below this one.

http://www.e90post.com/forums/showthread.php?t=969420
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      08-06-2015, 11:37 AM   #21
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Quote:
Originally Posted by melonbread View Post
off topic but i'll post here... so don't kill me.

can you anyone link me the post on how to install egr block off kit? step by step for rookies? i'm thinking of finally opening my hood this weekend.
Just bumped the thread for ya too
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      08-06-2015, 12:22 PM   #22
melonbread
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arigato amigos.

is it safe to run the car with egr blocked off with ses light on? i'm pretty locked in of gutting my car but can't seem to find a good shop to help me out.

so far on my list:

egr block plate
renntech tune
dpf removal and install down pipe
(does bms meth kit work on d?) meth kit

anything else do i need on the list?
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