The old converter was in my opinion a screw up on the part of the manufacturer even though I gave them the complete list of specs , they sent me a 4600 stall 9" . My 60' went from 1.45 to 1.39 NOT what I`d expected BUT an improvement just the same.Last time out there was a lateral cross wind 35 - 40 mph and I ran the 9.71 The previous time out VERY humid and hot with the old converter I went 9.74 both at the same MPH 139. Which is why I thought I`d have had bigger gains with the new converter.
Thx
chryco
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