another tach issue...

bransjeep

Petty Officer 2nd Class
Joined
Apr 4, 2011
Messages
130
i jusr recently repowered from a carbed 350 to an efi 350 and the only thing that is wierd is the tach, i hooked my shop tach to it and the boats tach is about 1100 off (slower)from the shop one,
 

captmello

Captain
Joined
Jun 30, 2008
Messages
3,855
Re: another tach issue...

Didn't you go to a est electronic ignition? Maybe that has something to do with it...Sorry not much help.
 

bransjeep

Petty Officer 2nd Class
Joined
Apr 4, 2011
Messages
130
Re: another tach issue...

I did go to an electronic ignition.. I didnt think about that. Maybe it puts out a lot more voltage... Causing a wrong reading. Maybe adding a resistor?
 
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