91 miata running lean? Porcelain white plugs
 

Hi all. I bought my 91 miata a couple months ago everything has been great. Did autocross with it last weekend (saturday& sunday) and got 24 runs in.

I'm na at the moment, but I have been procuring turbo parts slowly. I decided to test my compression today (got 190-200 across the board) and notice that my plugs are incredibly white, they've been in about 2k miles.

I want to say they're ngk copper plugs, car has 40k miles.

Thoughts?

Going to buy a wideband this week and will probably pick up megasquirt by the end of july.