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Old 08-26-2015, 03:18 PM   #1
2nd Gear Member
Join Date: Oct 2011
Location: Vaughan
Posts: 123
N52 3 stage intake on M54

Hey guys,

Random question but I've been curious and haven't been able to find anything definitive - was hoping one of you might know.

Why can't the E90 330i's 3 stage intake manifold be retrofitted onto the M54? I know there must be a reason or else we'd see this done - just curious what it is and why it can't be overcome.

Thanks in advance.
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Old 08-26-2015, 08:40 PM   #2
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Join Date: Feb 2008
Location: St. George, ON
Posts: 1,670
I'm not a tuning expert, but the motor would have to operate the N's 2 DISA valves vs the M's 1, or else you wouldn't see any gains. That's if the ports even bolt up... I think the intake comes into the manifold differently as well... Not to mention the n52 uses valvetronic in combination with the 3 stage manifold although this may not be a huge deal?

May also have to consider crankcase vent plumbing and other vacuum lines

For mechanical reference:

N52 manifold diagram


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Old 08-27-2015, 09:00 AM   #3
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Join Date: Jun 2007
Location: Ancaster
Posts: 3,570
Intake ports are completely different, the M54 ecu can't adjust the DISA valves either. Therefor this mod would never work!

Dakar M3 Track Build Thread
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Old 08-27-2015, 09:50 AM   #4
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Join Date: Oct 2011
Location: Vaughan
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Got it; thanks guys.
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