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NewArt · 04-27-2020, 05:52 AM

You will most likely get a cel if you switch to headers. The secondary cats will require a long O2 sensor lead to reach the downstream bung. My Circuitwerks high flow cats threw a cel for insufficiency. You would then need a tune to eliminate that. You might watch some of my videos which deal with these things.
The Porsche as seen by NewArt

04-27-2020, 05:52 AM	#2
NewArt Artist, 986S tinkerer Join Date: Aug 2013 Location: Montreal, Canada Posts: 1,821	You will most likely get a cel if you switch to headers. The secondary cats will require a long O2 sensor lead to reach the downstream bung. My Circuitwerks high flow cats threw a cel for insufficiency. You would then need a tune to eliminate that. You might watch some of my videos which deal with these things. The Porsche as seen by NewArt __________________ James now has: 2008 987S 6 speed Crashed: 2010 987.2 pdk in speed yellow! Sold to a cool racer chick: 2004 986 S YouTube channel: the PORSCHE as seen by NewArt www.youtube.com/channel/UCohdrH2xHTklM1thxk0KKOQ?