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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 Turbo Engine / Drivetrain / Exhaust Modifications > Intake compatibility
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      10-12-2017, 08:16 PM   #1
Socal435ix
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Intake compatibility

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Anyone know if aftermarket intakes (specifically Injen) are made for both auto and manual trans? Or are they specific to the transmission?
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      10-12-2017, 11:50 PM   #2
JaredIrvan
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Usually the only difference is for the auto they have a vacuum line connection on the intake. The manual one should either come without the hole in the intake pipe or something to cap it off
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      10-13-2017, 08:24 AM   #3
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There's a line between my stock intake and the charge pipe on my N55 with 8AT, and I suspect the same line is there in 6MT cars as well. Auto transmissions are no longer controlled by or sensitive to engine vacuum - it's all done electronically. The aftermarket intakes I've had on other BMWs I've owned had no vacuum connections whatsoever.
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      10-13-2017, 10:28 AM   #4
Mike@N54Tuning.com
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The BMS intake for example is now universal fit between AT and MT. I imagine all are as well, but not specifically familiar with the Injen.

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      10-16-2017, 09:00 PM   #5
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When I was trying to find an intake a year ago, I ended up ruling out the Injen as I too have the 8AT and it is my understanding that the heat shield shroud Injen uses doesn't fit the AT models due to the extra harnesses mounted on the strut tower. This was just the conclusion I came up with though, you might want to check with Injen or a reseller directly to confirm.
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