It's not a guaranteed thing with any test pipes, although some come with extended O2 bungs which definitely help / delay the light coming on. Also, packing said bung with steel wool has been known to help as well.
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2014 Nissan 370z Gun Metallic 6-spd
Test Pipes | Nismo CBE | Stillen Gen3 | Swift springs | Advanation Sway Bars | RJM Clutch | GTR DBA Premium Wheels
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