header o2s

txz4 · 01-19-2012, 04:38 PM

so im thinking of pulling the trigger on some "M3ANM3" headers from a fellow M member. My question, is if i decide to relocate to the rear o2s, is it going to cause a problem to just plug the unused o2 hole with a bolt? or do i need to grind it down and weld it over?

P.s. these are the type of headers that the M3 guys use in which their are two o2 locations on each header.

thanks for the help guys!

ZStig · 01-19-2012, 04:59 PM

Just make sure the bolt you use to plug the hole doesn't protrude into the header, and restrict airflow and you'll be fine

txz4 · 01-19-2012, 06:01 PM

Quote:

Originally Posted by Roffle Waffle

Just make sure the bolt you use to plug the hole doesn't protrude into the header, and restrict airflow and you'll be fine

thanks for the info, i figure the air would fill such a small gap in any event and negate any negative effect anyhow, i needed some reassurance though!

it looks like soon i shall have some headers installed and potentially some relocated cats or a tune.

anybody have any experience with headers and the AA tune to turn down the o2s?

01-19-2012, 04:38 PM	#1
txz4 Major 60 Rep 1,097 Posts Drives: 2006 M coupe Join Date: Oct 2010 Location: san antonio, texas iTrader: (3)	header o2s so im thinking of pulling the trigger on some "M3ANM3" headers from a fellow M member. My question, is if i decide to relocate to the rear o2s, is it going to cause a problem to just plug the unused o2 hole with a bolt? or do i need to grind it down and weld it over? P.s. these are the type of headers that the M3 guys use in which their are two o2 locations on each header. thanks for the help guys!
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01-19-2012, 04:59 PM	#2
ZStig instagram 997turbotom 286 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	Just make sure the bolt you use to plug the hole doesn't protrude into the header, and restrict airflow and you'll be fine __________________
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