[sanddan52]

I have a 2006 King sand car with a NA hayabusa motor. I bought the car used and have some questions.

How do I tell what year the motor is?

What spark plugs should I use? It's a stock engine with TRE, header and K&N style air cleaner.

I am in the Portland area, are there any dyno tunners here localy than can tune using a power commander?

Thanks for the help.