MS-II Tach Input

[95EclipseGS39]

Sorry not to post this in engine management section but i do not have enough posts yet.

Im currently building MS-II from the DIYAutotune kit, and i am at the point where i have to decide whether to use the Hall/Optical tach input, or the VR circut.

Does anyone know which one I should build?

 

[VelocitàPaola]

Sorry not to post this in engine management section but i do not have enough posts yet.

Im currently building MS-II from the DIYAutotune kit, and i am at the point where i have to decide whether to use the Hall/Optical tach input, or the VR circut.

Does anyone know which one I should build?

Hall/optical. Once you're done assembling the ECU, see here for how to modify the circuit to work with the 420A:

MS2-Extra Neon-420a Manual

See here for the modification for spark control:

MS2-Extra Ignition Hardware Manual