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Do I need an O2 spacer for HKS HFC?

Old Apr 22, 2012 | 06:55 AM
  #1  
emiller's Avatar
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From: Midlothian VA
Question Do I need an O2 spacer for HKS HFC?

Hi everyone,

I need some advice I just got HKS HFC PN: 33005-DM003 with HKS Down pipe I’m planning to use them with the stock cat back on my Evo X GSR 2011.
My question is do I need an O2 spacer for this HFC? I have the COBB AP an the plan is to use the stage 2 91ACN map v200, I read in this forum the stage 2 disables de O2 sensor but some people are still getting codes.

I’m going to install the HFC on Monday or Tuesday.
Any advice is appreciated

My mods so far:
COBB AP
HKS drop in filter
ETS UICP

Installation pending:
HKS DP
HKS HFC

Last edited by emiller; Apr 22, 2012 at 07:08 AM.
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Old Apr 22, 2012 | 09:41 AM
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From: Toronto
Most likely.

I have a High Flow Cat with a secondary o2 de-fouler and still get P0420 codes every now and then.
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Old Apr 24, 2012 | 12:02 AM
  #3  
emiller's Avatar
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From: Midlothian VA
Originally Posted by deanob
Most likely.

I have a High Flow Cat with a secondary o2 de-fouler and still get P0420 codes every now and then.
Thanks for the response,

I just got it installed today w/o the spacer flashed the stage 2 91ACN map did a couple pulls and so far no codes, but well I suppose they don’t show up immediately so I will wait and see.



Last edited by emiller; Apr 24, 2012 at 01:07 AM.
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