tricks for o2 sen.
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1st Gear
Joined: Aug 2007
Posts: 30
tricks for o2 sen.
Hi! I have arp down-pipes on my 05 s4 this removes 2 of the cats I was told to put washer on the o2 senthis acts like a spacer. where the 2 cats where removed that this will keep the check engine light off.
3rd Gear
Joined: Apr 2006
Posts: 2,948
From: Tacoma, WA
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