I have an 2007 Silverado I have installed an aftermarket Tach on. I have wired it up, and it works. But the problem is that even when on the eight cylinder pot on the tach it reads 3000 when it is at 800. The Resolution High and Low are at 2. Will changing these correct the signal and if so, any thoughts what numbers to use? I do have the type set to crank as well.
when I did that it reads 6800
I know on the gen III that is how it works on the 4 cly setting on the gen 4 it is new game for me.
LS2 with E40?
E38 I believe 2007 Chevy Silverado 5.3L
Ok if E38 try either 15/15 for 4 cyl or 7/8 for 8 cyl output. 2/2 is providing 4x too many pulses per rev.Originally Posted by blazzard
Just as a follow up 7's on the programming and 8cyl setting on the tach seems to be right on +/- 25 rpm compared to the scanner.
Cool. Have you set for 7/7? It needs to be 7/8. The two numbers added together need to be divisible into 60.
good to go thanks for the input
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