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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 07-11-2013, 03:13 PM   #1
Stevo77101
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Join Date: Oct 2012
Location: Spokane, Wa
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My Ride: 2000 328i
Cold air intake and the mass air flow sensor

So Im wanting to install a CAI and I'm confused on the mass air flow sensor. Do I need to buy one that fit the CAI, or will the CAI come with an adapter of some sort? By the way it's a 2000 328i
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Old 07-11-2013, 03:26 PM   #2
LeMansteve
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Your car already has a cold air intake.
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Old 07-11-2013, 03:37 PM   #3
TopasE46
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Re: Cold air intake and the mass air flow sensor

There should be a silicone boot that adapts the Maf sensor to the new intake tube.

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Old 07-11-2013, 05:36 PM   #4
YYCZHP
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Cold air intake and the mass air flow sensor

This is gunna sound counter intuitive but completely disregard the MAF and install the intake how you thing you would. WAY simpler than you think. If you really want to understand what is what starting at the front you have your intake scoop behind the grill -> intake box -> intake boot with MAF -> lower intake boot -> intake manifold. Basically after your intake box there is a tube with a lip and a wire going off of it. The wire is your MAF and your new intake bolts onto the lip closer to the front of the car.


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Old 07-11-2013, 06:58 PM   #5
LeMansteve
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If it's a CAI that was designed to fit properly, it should come with an adapter or fit right onto the MAF. It should also come with proper installation instructions.

Note that you are basically wasting your time installing a CAI - unless you just want that cool induction sound and/or bling under the hood. Power gains are extremely small, if any. Also know that more air = more crap accumulating onto your MAF sensor = early MAF failure.
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