Plug chop on the Vmax?

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rebar

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Was thinking about trying this.

Warm up the engine and go for a short ride letting the engine comes up to its normal operating temperature. Install a brand new plug that's been properly gapped. With the new plug installed aggressively accelerate through the gears until you reach 4th or 5th gear. For best results you should accelerate up a slight up hill section to place additional load on the engine. Continue to run the engine at WOT for 20 to 30 seconds longer if there is not fear the engine is running lean. If you suspect the engine is running lean 15 to 20 seconds to give you an indication. At the end of your full throttle run simultaneously push the kill button, chop the throttle and pull in the clutch. This procedure is often refereed to as a " plug chop". It is important to perform a plug chop exactly as described. If you allow the engine to run or leave the throttle open for even a few seconds after the plug chop the plug reading will be invalid. Now remove the spark plug and carefully look at its color.



This is the only mention of not allowing any unburned flue to get to the plug after the shut down I have found.
Is that important?

Pull clutch. hit ignition switch. and release throttle simultaneously?
WOT For 20 seconds... could only happen in 5th at 120 mph +:eusa_dance: sounds a bit hairy.
 
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