I tried to connect the OEM tach lead to the
MegaSquirt EFI unit, it freaked out the Stock
ECM and would not run, I think the Tach uses
the pulses from the ECM ground on the coil, so
what you really need is to remove 2 of the ignition
pulses from the tach, OR print out or replace the
faceplate on the tach so the RPM reads correct.
This was an idea I had to correct the bigger tires
and changed speedo readings, just need a clean way
to replace the stock faceplate, like the Ricers do with
colored speedo faceplates.
Anyone have any good ideas of how to do this
Wild
