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To tell the truth before and after modifications. Knowledge is power! By knowing the facts before and after modifications your efforts will not be in vain. GNSS Performance Meter will help you make sense of the improvements and help you make educated decisions to make sure youre not spinning your wheels. For everyone trying to gauge their performance here’s an affordable way to do just that. Just got some new mods installed Get some real feedback really quickly. This is a professional-grade instrument accessible to enthusiasts. Its every modelers dream. Enjoy!