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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 08-04-2013, 11:53 AM   #1
cold m3
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Join Date: Oct 2010
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My Ride: E46 ///M3
Arrow Benefits of Intake Air temperature sensor relocate (IAT)

A lot of people over at M3Forum have been discovering the benefits of relocating the temperature sensor that is built into our MAF's that often heat soak after a short time of driving decreasing performance (timing) and not being able to give a accurate reading of what the true temperature is.

Here is a test you can do with your own car! Using a App (torque) see how far from ambient temperature you are from what your MAF is reading. At some points it will be only 30 above and some 60 and even more and NEVER go back done until very long time has passed.

After the relocation it will be a lot closer to ambient temp or just slightly higher depending where you mount it in or outside the air intake box and NEVER go past a unrealistic temp that your engine bay is at and not the current air coming in.

Both FSTT and Evolve uses these with their tunes!

Here is the DIY:

Photos of My ///M3

Last edited by cold m3; 12-29-2014 at 03:09 PM.
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Old 02-03-2014, 06:28 PM   #2
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Join Date: Sep 2011
Location: Cincinnati
Posts: 114
My Ride: 00' 323i
Non M Intake Air Temp Sensor

Where Is it located? All I find temp' sensor wise on my car is two temp sensors located at the bottom of my front bumper. I assume their ambient temp sensors. But ALL the threads I read show our cars only having 1. Not two. Any help ?

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Old 02-03-2014, 06:50 PM   #3
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My Ride: 01 M3 Vert
Read the DIY
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iat, intake, relocate, sensor, temperature

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