How do I know if I have a 3 stage or single stage intake?

GabeMG · 05-25-2022, 02:36 PM

I have a 2011 128i. According to a bmwvin site my car came with a N52K. How can I verify what intake manifold my car came equipped with? Thanks!

gary_william · 05-25-2022, 07:15 PM

N52 is single stage

GabeMG · 05-25-2022, 09:01 PM

Quote:

Originally Posted by gary_william

N52 is single stage

I know that, however I'm not 100% sure if I actually have an N52 or N51.

Captain Confused · 05-25-2022, 10:41 PM

Quote:

Originally Posted by GabeMG

Quote:

Originally Posted by gary_william

N52 is single stage

I know that, however I'm not 100% sure if I actually have an N52 or N51.

There are 2 valves one just above the throttle body and the other opposite side, close to the block.

The picture shows the larger valve just above the throttle body.

spidertri · 05-26-2022, 09:41 AM

N51 has the secondary air pump in the space right behind the passenger headlight.

05-25-2022, 02:36 PM	#1
GabeMG Private 8 Rep 81 Posts Drives: BMW 128i Join Date: May 2022 Location: Long Beach, CA iTrader: (0)	How do I know if I have a 3 stage or single stage intake? I have a 2011 128i. According to a bmwvin site my car came with a N52K. How can I verify what intake manifold my car came equipped with? Thanks!
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05-25-2022, 07:15 PM	#2
gary_william Private First Class 315 Rep 168 Posts Drives: 2013 128i Join Date: May 2017 Location: Vancouver, WA iTrader: (0)	N52 is single stage
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05-26-2022, 09:41 AM	#5
spidertri Lieutenant 398 Rep 464 Posts Drives: 11 128i 6MT Sport Join Date: Sep 2010 Location: Rock Hill, SC iTrader: (1) Garage List 2011 BMW 128i [0.00]	N51 has the secondary air pump in the space right behind the passenger headlight. __________________ 11 128i slicktop 13 WK2 19 Alltrack S
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