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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 > Wastegate Rattle Fixed



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      03-28-2015, 09:55 PM   #1
e92_boost
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Wastegate Rattle Fixed

Hey guys so I was cruising around and messing around with option 10 & 12 on JB4

Is it okay if the options are like this
10 & 1k
12 & 2k

Can I have any issues? Any power lose? Any input would be great just registered on N54Tech to see what Terry says but I'm waiting for approval.
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      03-28-2015, 09:56 PM   #2
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      03-28-2015, 09:58 PM   #3
e92_boost
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      03-28-2015, 10:17 PM   #4
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it's fine...

car just sounds annoyingly loud and the pedal feels awkwardly laggy with the lagfix set that low.
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      03-28-2015, 10:28 PM   #5
e92_boost
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Quote:
Originally Posted by tofu?
it's fine...

car just sounds annoyingly loud and the pedal feels awkwardly laggy with the lagfix set that low.
So it's no issue correct? No power loss or problems with the turbos or wastegate?
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      03-28-2015, 10:58 PM   #6
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      03-28-2015, 11:19 PM   #7
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It's not an issue. However you may experience more turbo lag since the wastegate is being held open longer.

Higher settings-less lag
Lower settings- more lag
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      03-28-2015, 11:50 PM   #8
e92_boost
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Is it noticeable on power loss if any?
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      03-29-2015, 12:00 AM   #9
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Quote:
Originally Posted by e92_boost View Post
Is it noticeable on power loss if any?
If your in 3rd for example, at 2k RPM, and floor it, it might take an extra second or so for boost to begin spooling. Daily driving it won't be a big deal, but the exhaust note will be louder.
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      03-29-2015, 12:05 AM   #10
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Quote:
Originally Posted by 335NJ
Quote:
Originally Posted by e92_boost View Post
Is it noticeable on power loss if any?
If your in 3rd for example, at 2k RPM, and floor it, it might take an extra second or so for boost to begin spooling. Daily driving it won't be a big deal, but the exhaust note will be louder.
How noticeable is the power loss though? I didn't really notice it and the exhaust sounds awesome and deeper
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      03-29-2015, 12:20 AM   #11
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Quote:
Originally Posted by e92_boost View Post
How noticeable is the power loss though? I didn't really notice it and the exhaust sounds awesome and deeper
It's going to be very noticeable. It's a temporary fix to keep the WG's quiet... But not meant to be a long term solution as the boost lag is atrocious... Believe me, I've been running around with this setup for the past 6 months and I cannot wait to go back to normal once I drop in a pair of RB's.
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      03-29-2015, 12:33 AM   #12
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Quote:
Originally Posted by sirdaft1
Quote:
Originally Posted by e92_boost View Post
How noticeable is the power loss though? I didn't really notice it and the exhaust sounds awesome and deeper
It's going to be very noticeable. It's a temporary fix to keep the WG's quiet... But not meant to be a long term solution as the boost lag is atrocious... Believe me, I've been running around with this setup for the past 6 months and I cannot wait to go back to normal once I drop in a pair of RB's.
I'm on the same boat as you but I couldn't HANDLE IT ANYMORE so I started messing around with it haha

If I want to "race" I'll adjust it how is yours set up with so no lag?
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      03-29-2015, 02:17 AM   #13
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Quote:
Originally Posted by e92_boost View Post
I'm on the same boat as you but I couldn't HANDLE IT ANYMORE so I started messing around with it haha

If I want to "race" I'll adjust it how is yours set up with so no lag?
EVERYONE has different settings. There is no clean-cut answer to WG Rattle fix via the adjustments in the JB4, but generally higher Option 10 settings resolve the lag.

However, increasing them too much can cause surging, and low throttle-boost issues (Kind of like spiking if you know what I mean). I messed around with the settings and found the higher end to work better for me, but as soon as I went out for a drive, in 1st gear the car would surge heavily, making driving almost unsafe in some cases during traffic, etc.
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      03-29-2015, 03:26 AM   #14
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I'll mess with that tomorrow and see where mine stand but like a general idea were would "stock" jb4 setting would it be at if you remember or not I would adjust between 3.5k like that's where mine stood at
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      03-29-2015, 03:34 AM   #15
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Quote:
Originally Posted by e92_boost View Post
I'll mess with that tomorrow and see where mine stand but like a general idea were would "stock" jb4 setting would it be at if you remember or not I would adjust between 3.5k like that's where mine stood at
Default for Menu 10: 4000
Default for Menu 12: 2500
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      03-29-2015, 03:36 AM   #16
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Quote:
Originally Posted by 335NJ
Quote:
Originally Posted by e92_boost View Post
I'll mess with that tomorrow and see where mine stand but like a general idea were would "stock" jb4 setting would it be at if you remember or not I would adjust between 3.5k like that's where mine stood at
Default for Menu 10: 4000
Default for Menu 12: 2500
Thank you
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      03-29-2015, 08:23 AM   #17
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Originally Posted by e92_boost View Post
Thank you
FYI- the JB4 mobile app makes it 100x easier to change default WG settings back and forth vs the stalk/speedo/rpm method. I don't change the values often, but it sure does make it easier than clicking the stalk 50 times if I feel like going for a spirited drive.
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      03-29-2015, 08:31 AM   #18
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I never was able to fully fix the rattle after switching to ISO so long ago. No more accel/decel rattle, but I still get it if I downshift and then let off the throttle at a high rpm.
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      03-29-2015, 11:48 AM   #19
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Quote:
Originally Posted by sirdaft1 View Post
FYI- the JB4 mobile app makes it 100x easier to change default WG settings back and forth vs the stalk/speedo/rpm method. I don't change the values often, but it sure does make it easier than clicking the stalk 50 times if I feel like going for a spirited drive.
The JB4 PC interface does this as well.

Last edited by 335NJ; 03-29-2015 at 11:55 AM.
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      03-29-2015, 01:35 PM   #20
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Is the app worth the 28 dollar
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      03-29-2015, 01:45 PM   #21
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Is the app worth the 28 dollar
Absolutely, but you also need to buy the harness that allows your phone to communicate with the JB4.
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      03-29-2015, 02:00 PM   #22
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Quote:
Originally Posted by 335NJ View Post
Absolutely, but you also need to buy the harness that allows your phone to communicate with the JB4.
You mean the USB Cable?
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