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I seriously doubt you are going to hurt anything doing a dyno run or 2 with it. Although I doubt it will make any measurable difference. Any difference you did notice on the dyno sheet would more than likely be normal scattering due to variation of conditions and machinery. Especially taking into account ser007's post. There is really no evidence it made any noticeable difference if the change was that small. You would have to do a lot of runs both ways to be sure.