Hey all, Just pulled the plugs for the first time since it’s been tuned which was around 2500k’s ago. It’s a built engine making just over 500rwkw. Just trying to figure out where to start looking to get to the cause of this.

white is a sign of the cylinders running too hot, so you've either got knock or high cylinder temps.

Can it be oil getting In there?

That would cause cylinder temps to rise as the oil joins the combustion and allows hot-spots to form... but not sure on that... I'd be talking to my tuner.