Correct, tuning an engine with no load would be like getting a stress test while walking on a flat surface. Tuning under normal load is like a stress test on a treadmill running wide open. One gives you feel good results until actually driving the later gives you accurate results. Another thing is I hope you don't have one of those no rev limit cdi's installed while doing your test. You would definitely be over revving the engine causing some sort of premature wear and even damage. Be careful, the correct way for you to test I explained in an earlier post unless you have access to a dyno which I would suspect that to cost between $200-$400 dollars for a few tuning runs.
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