Mazda3 Forums banner
1 - 1 of 1 Posts

· Registered
233 Posts
CEL being turned on because the ECU sense fuel/air ratio is out of "factory spec"; if the tolerance level of the "factory threshold" is set too low, CEL warning will be turned on even it's not leaning out... That may be the reason why Injen still releasing the intake.
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.