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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Vacuum canister delete/relocation.



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      10-06-2017, 11:00 AM   #1
Madbrain
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Vacuum canister delete/relocation.

I recently deleted my vacuum canisters. I found that during highway driving there was a slight lag during tip in and then boost came on very violently. Fun but unpredictable. I reinstalled one canister and have restored normal operation with a more minimalist approach.



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      10-06-2017, 12:18 PM   #2
86merc
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I just added VRSF turbo inlets. I was contemplating running just one canister. I know guys have deleted them so I figured one would work as well. Glad to see it worked out better having one still on the car. I'll be doing the same now. Thanks for sharing.
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      10-06-2017, 12:38 PM   #3
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No problem, I really wanted to delete both but one has worked better. Don't be afraid to try it without any, you might enjoy it.
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      10-06-2017, 03:25 PM   #4
FCobra94
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Logs?

Most delete their canisters with no issues; myself included.

Might be something else going on in your situation...tired/old solenoids, etc.
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      10-07-2017, 08:36 AM   #5
Madbrain
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Quote:
Originally Posted by FCobra94 View Post
Logs?

Most delete their canisters with no issues; myself included.

Might be something else going on in your situation...tired/old solenoids, etc.
Haven't logged lately, honestly hadn't considered the solenoids. Boost response is spot on around town though, it only occurred when cruising at 85 in 6th. Not much of a concern but a log is a good idea.
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      10-07-2017, 09:16 AM   #6
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What is the purpose of deleting these?
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      10-07-2017, 08:03 PM   #7
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Weight, notsomuch. Clutter, maybe. Boredom and curiosity, most likely. For me it was a combination.
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      10-08-2017, 12:28 AM   #8
TemjinX2
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i dont get the purpose of this? doesnt the canister only weigh like 3oz? does it improve response to delete them?
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      10-08-2017, 12:42 AM   #9
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I deleted my canisters plus added inlets and had the same delay turned out to be my tial bov. The spring needed adjustment after inlets. After adjusting no delay without canisters
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      10-09-2017, 11:47 AM   #10
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Quote:
Originally Posted by TemjinX2 View Post
i dont get the purpose of this? doesnt the canister only weigh like 3oz? does it improve response to delete them?
Maybe a little more with the bracket lol, no discernable difference on a 400hp car.
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      10-09-2017, 11:48 AM   #11
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Quote:
Originally Posted by Supra2k6 View Post
I deleted my canisters plus added inlets and had the same delay turned out to be my tial bov. The spring needed adjustment after inlets. After adjusting no delay without canisters
Thats interesting, spring too loose?
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      10-09-2017, 03:21 PM   #12
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Did you upgrade the line going to the BOV from the manifold
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      10-09-2017, 05:47 PM   #13
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Quote:
Originally Posted by kfrazie1 View Post
What is the purpose of deleting these?
In my case, relocated inlets leaves little room. Ive had them out for some time now and can tell no difference. I curios as to why the OP had an issue.
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      10-09-2017, 08:01 PM   #14
TemjinX2
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Quote:
Originally Posted by Madbrain View Post
Maybe a little more with the bracket lol, no discernable difference on a 400hp car.
ah got it.... was hoping to learn a new n54 secret lol.
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