You really need a multimeter to test out to find out if the coil is shot. And yes your 250 is going to walk all over the 230. 4-strokes back in the day don't have anywhere near the power that todays 4-strokes have. Unless he does a lot of work which I am not sure there is much he can do to it except nitrous you are going to beat him all day long, unless you pop a tire or foul a plug but I think you still have a pretty good chance at winning.
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