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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 > Serious IAT ISSUE



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      03-21-2020, 01:38 PM   #1
ludoN54
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Serious IAT ISSUE

Hi,

experiencing IAT issue
it seems that it goes way too high( 212f)
got 2F0C Code, which is related to IAT sensor, tried to clean, and change it, but still same issue.

mods : BMS DCI, MMP downpipe, custom tune

i live in the caribbean so ambient is often high ( 86 and more)

you will find here some logs =>https://datazap.me/u/ludovic-poviac/...og=0&data=3-21

can someone help with this ?
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      03-21-2020, 01:58 PM   #2
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Try getting an aftermarket FMIC?
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      03-21-2020, 02:12 PM   #3
ludoN54
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Quote:
Originally Posted by BM3Rrrr View Post
Try getting an aftermarket FMIC?
I agree, but I would l'aile to first deal with this issue, as it doesn't sound normal to have IAT so high
And if you look at the log,on one of them it goes straight from 60 Celsius to nearly 100... which doesn't sound good at all
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      03-21-2020, 02:43 PM   #4
ludoN54
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Quote:
Originally Posted by BM3Rrrr View Post
Try getting an aftermarket FMIC?
i have friend with exact same setup and he is at 162f while i'm at 212
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      03-21-2020, 02:44 PM   #5
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https://datazap.me/u/ludovic-poviac/...og=1&data=3-21
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      03-21-2020, 02:46 PM   #6
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Sounds like you need a new tmap sensor
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New setup; Covid 19Ts on RFP 93 + ARM inlets, dp, VTT cp and PSP outlets
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      03-21-2020, 02:52 PM   #7
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Quote:
Originally Posted by type-dRew View Post
Sounds like you need a new tmap sensor
It's already new...
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      03-21-2020, 02:53 PM   #8
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Quote:
Originally Posted by ludoN54 View Post
Quote:
Originally Posted by type-dRew View Post
Sounds like you need a new tmap sensor
It's already new...
Bad wiring or connector then
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      03-21-2020, 02:59 PM   #9
ludoN54
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ok i will check the wiring then

BTW i already have a 7.5 stepped FMIC that i didn't install yet because of this issue
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      03-21-2020, 03:59 PM   #10
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looks very weird
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      03-21-2020, 05:21 PM   #11
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I'd install the new FMIC and then evaluate

The DCI's aren't doing you any favors.
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      03-21-2020, 08:41 PM   #12
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Quote:
Originally Posted by ludoN54 View Post
looks very weird
It’s strange that there’s a huge drop in the middle of the pull...it looks like a short. But it also looks like you need to install the IC...

Last edited by Bimmer_Engineer; 03-21-2020 at 09:39 PM..
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