Has anyone worked out how to get the revcounter to work properly after switching to a coil pack and twin ign amp's?? As it is, it just reads half. Its an 89 saph and no-one seems to know.
Ive tried taking feeds from both ign amps and dioded them but then its just erratic.

Any ideas would be greatfuly recieved, unless they're daft

CheeRS, Paul