Originally Posted by
MrMicra2015
minor upgrades such as "aluminum air intake with cone filter" and "freeflow exhaust " will not cause cel to come on....mostly because they dont affect the engine much,just screw up the harmonics of air and make stuff louder. (which may not be a bad thing)...tinker a bit but dont go crazy and it will be fine...FYI there is no "reflashing"...its not a computer (well it is really, but its locked down worse than apple) and Nissan wont do ^&* to accommodate every single (or married) person's personal 14:1 ratio (theoretical stociometery) why should they??