Nitrous on a 340 100 shot

Here is a pic of the spark plug with the threads removed. Unfortunately the parts store here won't have a set of colder plugs for me till Tuesday apparently.

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That tune is nice. It is ever so slightly rich but I’d call it safe and happy. I wouldnt change too much, especially if you’re going to continue nitrous use. It’s nice to see someone actually take the time and effort to check his work. Now once the timing is squared away you’ll know you have a healthy tune up.