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E90 General discussion and technical help for 2005-current 3 series cars.

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Unread 03-21-2008, 05:47 PM   #1

Name: JDArsenault
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Looking For The IAT Sensor

G'day all...I'm new to the site, but I've referenced it in the past. After leasing 4 BMWs I finally broke the vicious cycle and bought one. As with every other, I'm pretty damn satisfied. I'm especially excited about tinkering with it being it's mine.


I bought a Magnum Dyno-Boost chip which connects to the O2 sensors on the exhaust. (So far so good). The directions also say to connect it to the signal wire from the IAT sensor to ECU. I have an 07 328i. I see the Mass Air Sensor, but not the IAT. I'm browsing different sites but I can't find anything on it. Does it exist or which color wire is the air temp wire on the Mass Air Sensor?

Thanking anyone in advance for their help. I appreciate it.

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Unread 08-27-2009, 07:36 PM   #2

Name: Grubio88
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Same question...

I'm waiting on the same answer as well... Also, I kept looking for days on reviews on those IAT performance chips and haven't found anything solid.
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Unread 08-28-2009, 07:43 PM   #3
Big Evil
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Name: Big Evil
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It's not separate from the MAF. You're getting into scary territory there. May just need to go get one from another car and install it yourself. Although Im not recommending it. I take it you're both out of warranty? If not LEAVE IT ALONE. Can be a HUGE issue when going in to correct drive ability issues.
Big Evil, The BMW driving monster of the American Southwest (Currently on BMW #5)
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