I got my tach to work buy wiring it to the a19 pin but its reading incorrectly.
If i had to guess its almost reading half of what it should be maybe a little less.
Can anyone help me figure out its prob something simple that i missed?
Thanks
Chris

 

change the tacho teeth box if your tach is reading low it should be changed to 2 or 1 if its reading high it should be changed to a higher number

Credit to tony at t1 and aem tech support

thanks
chris