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Old 06-24-2013, 01:33 PM   #1
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Default 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.


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