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dap930 dap930 is offline
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Join Date: Dec 2011
Location: Virginia Beach, VA
Posts: 417
Nocarrier is correct. The injectors and idle valve are grounded through the MS3Pro.

I am sure xbmwguy will chime in, but I believe he wired both logic inputs for the dual coils to each MS3X spark output. There has been a lot of debate about whether the MS3X spark outputs could handle the current for two coils. But it has apparently worked well for him with these Toyota COP's. It all depends on the input impedance of the coil's logic circuit. Toyota (Denso) will work. Other brands may not. Also, I have heard that the MS3Pro spark outputs can handle more current than the MS3X.
1977 930 Slant, MS3 EFI, Carrera intake, Twin plug, Powerhaus headers, Magnaflow muffler, Garretson intercooler, GTX3071R
Old 01-12-2017, 07:39 AM
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