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Downpipe q's

I got made a complete system from Niall hopefully get fitted new year, I noticed checking photos it has the 02 bung at the top where the pre cat should be but no bung for the rear 02, am I going to run issues not connecting this up, or is there a work around for plugging something in its place. Tried to get an answer on the forums but couldn't find one. Help would be appreciated

What car are you fitting them too?
Only Rs4 and 2001.5 s4's have rear sensors.

Oh right it's for an s4 avant I would say 2000/1999 I just assumed I would have rear 02 sensors Forum Index -> Audi S4 & RS 4 (B5) quattro
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