I recently purchaced a used tach for my 2001 yamaha 60 2 stroke and the rpm reading at wot was only 2200.I know for a fact the i was turning more than that because i was atleast going around 30 mph.I have a 18 foot alumacraft tunnel at the time it was fully loaded with two other people in it.I was wondering if anyone can help me with the pulse setting and or the cycle setting what is the differnce?The tach is a teleflex Sahara Thanks.