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hight hight is offline
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Join Date: Sep 2015
Location: Netherlands
Posts: 19
Originally Posted by Reanimotion View Post
OK, there appears to be just the four wires and no dedicated tachometer output.

The recommended Opto wiring for the MicroSquirt and MegaSquirt relies on Flyback voltage from the coil when it fires and the magnetic field collapses

The 123tune, being electronic, may have internal diode protection from that pulse and therefore the MicroSquirt can no longer see any reverse voltage to trigger from

Does your car have a tachometer and if so where is it getting it's signal from?
Yes, gets its signal from ..... the coil
1984 VW Golf mk1 GTI Pirelli Schrick turbo k-jet

2000 Seat Ibiza 6k2 1.6 8v
Old 09-27-2016, 10:51 AM
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