This is an extra board that plugs into the main board, under the MS2 daughter board, making the MS ECU 3 layers high:
1: Main board (V3.0 or V3.57)
2: MS2X Expansion Board
3: MS2 Daughter Board
This option is only available for the MS2-Extra ECU and it gives you the following inputs and outputs:
2 x Injector Bank Drivers - Each bank is capable of driving up to 2 High Impedance Injectors (NOT Lo-Impedance)
This gives the MS2 ECU 4 banks of injectors, so a 4cy can run sequential fuel, or a V8 semi-seq.
2 x Logic Level Inputs -They can be used to control options like Launch, N2O, switch maps, etc. (12V in to switch feature)
1 x Medium Current Output - For controlling relays (e.g. cooling fan, NOS, etc) tacho, warning light, etc.
1 x High Current Output - This can control relays, as well as directly connect to an Idle valves, Boost valves, up to 3A.
1 x ADC input - 0-5V inputs for second O2, etc.
1 x VR sensor input - This gives the ECU a total of 2 trigger inputs, e.g. one for the cam and one for the crank.
1 x Hall sensor input - This gives the ECU a total of 2 trigger inputs, e.g. one for the cam and one for the crank.
Below is very important information - PLEASE READ
It is very important that you ensure your settings have "Additional Drivers" selected here when theres an MS2X card installed with injector drivers.
To run Batch fuel set Sequential Injection to "Untimed" this will fire Bank 1 and Bank 2 Injectors in a batch fuel system, 2 banks of fuel outputs. (2 on the main board).
To run Semi or Sequential Fuel set "Sequential Injection to Sequential / Semi-Sequential." This will fire 3 (6cy) or 4 (4 or 8cy) injector banks. (2 on main board and the others on the MS2X card).
4 cy Sequential Setting:
6cy Semi-Sequential Setting:
8cy Semi-Sequential Setting: