328i Header diy

hassmaschine · 09-19-2018, 08:57 AM

That is really poor placement of the primary O2 sensor. It needs to be able to read all 3 cylinders on that bank. personally, I wouldn't use them like that - O2 sensor feedback is really important on the N52 (even if you have a MAF).

markslc1 · 01-18-2020, 07:45 PM

I made it all the way through getting the headers on. Now time to hook up the mid pipes. These AA headers include the remaining hardware shown. I can see I would use the silver nuts/bolts to hook up the midpipe. But what would I do with the brass ones then? There is only two of those.

avocet · 01-18-2020, 08:38 PM

I will take a guess and say it is for people who are using aftermarket mid pipes. I don't think they will have captive nuts/nutplates built into the flange like oem.

09-19-2018, 08:57 AM	#23
hassmaschine Major General 3966 Rep 7,215 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	That is really poor placement of the primary O2 sensor. It needs to be able to read all 3 cylinders on that bank. personally, I wouldn't use them like that - O2 sensor feedback is really important on the N52 (even if you have a MAF).
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01-18-2020, 07:45 PM	#24
markslc1 Lieutenant 183 Rep 537 Posts Drives: 2011 1M, 14 X5 x35i Join Date: Oct 2012 Location: Mill Creek, WA iTrader: (1)	AA Headers and bolts I made it all the way through getting the headers on. Now time to hook up the mid pipes. These AA headers include the remaining hardware shown. I can see I would use the silver nuts/bolts to hook up the midpipe. But what would I do with the brass ones then? There is only two of those.
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01-18-2020, 08:38 PM	#25
avocet Major 252 Rep 1,157 Posts Drives: 2007 328i 2011 X5d Join Date: Sep 2010 Location: Vancouver bc iTrader: (0)	I will take a guess and say it is for people who are using aftermarket mid pipes. I don't think they will have captive nuts/nutplates built into the flange like oem.
	Appreciate 0 Quote