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Lambda sensor extensions

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Hi all. I recently fitted Topgear stainless headers with 200cel cats to my Cayman 987.1s. The fit and finished seemed great however I noticed a light ticking noise when pulling away slowly upto about 2.5k. My suspicion was manifold gaskets which looks to be the case so I'm going to try swapping to OEM gaskets.


Also after 100 or so miles its thrown a CEL. On inspection it looks like Lambda sensor and I've been advised extensions should help sort it and stop light coming on.


Has anyone else had experience of this? If so did you fit x4 or just x2 after the cats?


Thanks for any info relating to either gaskets or extensions.



Edited by Edmundo2
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