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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Boost over target and Boost under target



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      09-10-2018, 02:27 PM   #1
DaMaskedDriver
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Boost over target and Boost under target

So I jus recently put on jb4 G5 and was running on map 5.

When I punch it, it feels like it loses boost then comes back on.

Checked my codes that popped up and got:
2CA7 Lambda probe heating in front of catalytic converter 2, function
30FF Boost under target -- possible boost leak
2F0C No Description Found
2F08 Inlet air temperature sensor, signal
3100 low boost mode engaged -- CEL displayed
30FE Boost over target

I checked my vacuum lines they all seem to be fine. My stock charge pipe seemed to be fine with no cracks.

Here's a couple logs:
https://datazap.me/u/micah007/map-5?log=0&data=1-2-4

https://datazap.me/u/micah007/log-15...0&data=1-4


Im fairly new to the n54 life and is trying to learn a lot from it. Would be awesome if you guys can help. Thanks !
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      09-10-2018, 02:36 PM   #2
lwgrenier
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Quote:
Originally Posted by Micahgildernew View Post
So I jus recently put on jb4 G5 and was running on map 5.

When I punch it, it feels like it loses boost then comes back on.

Checked my codes that popped up and got:
2CA7 Lambda probe heating in front of catalytic converter 2, function
30FF Boost under target -- possible boost leak
2F0C No Description Found
2F08 Inlet air temperature sensor, signal
3100 low boost mode engaged -- CEL displayed
30FE Boost over target

I checked my vacuum lines they all seem to be fine. My stock charge pipe seemed to be fine with no cracks.

Here's a couple logs:
https://datazap.me/u/micah007/map-5?log=0&data=1-2-4

https://datazap.me/u/micah007/log-15...log=0&data=1-4


Im fairly new to the n54 life and is trying to learn a lot from it. Would be awesome if you guys can help. Thanks !
This is the N55 forum. You should post this in the N54 forum.
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