Our Z's come with two Cats... With the test pipes it is dependent on the type of brand of TP's that you but you will have a higher chance of throwing a CEL with TP's Vs. HFC's...Most of the CEL's that amount from TP's or HFC's have been due to imporper installs...I know a few members that have had issues with CEL's and performed the non-fouler method of stuffing steel wool into the O2 bungs.
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2013 Nismo Z34 / FI TT #091 / IG: @lilzilla_z34
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