Strong misinformation in this thread.
Non-foulers ensure the CEL stays off when going cat-less. If the proper installation procedure is followed.
I have Fast Intentions test pipes on my '09 370z, I have never seen the CEL light come on.
Installation instructions followed to a T by Real Auto Dynamics in Queens. I dont have a pdf to the instructions but I'm sure FI does.
Its not the product, it was your installation.
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| 2015 Nismo headlights| 275/305 | Z1 spacers | Eibach Pro-kit |k&n typhoons | AAM S-Line catback + FI test pipes | Stillen splitter |
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