Did some time with my GPS vrs. IAS the other day and came to the conclusion that my IAS is showing at least 10mph faster than my GPS shows.Took readings going in North,East, South, West several times and realized there was a noticable difference. "OOPS". Even my take off speed is higher now. Don't know why this difference in IAS since the engine conversion,but you can be assured that I will have a new airspeed indicator installed before long.A little increased airspeed was expected but seeing 130 was a little too much to believe myself.Felt good while the mystery lasted. Larry Ulshafer N99916
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