i am not 100% on cal smog laws.
i am not using a stock intake, if that matters.
otherwise the only thing missing is a cat converter. both of the o2 sensors are there
i am using the bypass on the rear to keep the po420 lite off.
but everything works like irs supposed to.
the CEL is there, the OBD2 connector is there.
i dont think it would need much of anything to pass cal smog. (these truck pass the gas test with no cat, for the record)
if it did we can negotiate the differences.
