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I was heading to HIN at San Mateo and I got pulled over by a cop

because of i dont have front plate. This is not a problem.

I have Dinan Exhaust and cop was asking me replace to stock. I bought

the car with Dinan exhuast from BMW moutain view.

Cop ask me to make appointment with "STATE REFEREE CERTIFICATION."

They will tell me if its illegal or not. What should I do??

Some other friend told me i can get state legal certification for the exhast

from Dinan.