No didnt change anything. It seems to respond normal up to around 2000 rpm then slows way down. I am rigged with twins and wonder how difficult it would be to switch from one to the other just to see if that is it. Thanks for the reply KennySequoiha (12/05/2010)if the tach works at all. and has worked fine in the past with the same set up, it is probably just a bad tach..
the same set up i mean you didnt change the prop or anything.