You need to edit your "./MegaSquirt/car1/mtCfg/settings.ini" file using notepad.

unset everything except for MSNS_EXTRA..... like this:


;-------------------------------------------------------------------------------
; Pick a base configuration.
; Exactly one of these configurations must be "#set" and all the rest must
; be "#unset".

#unset DFI ; David Hooke's Ducati FI
#unset DUAL_TABLE ; Guy Hill and Eric Fahlgren's Dual Table variant
#unset MSNEDIS ; James Murray and Dave Hayne's MSnEDIS ignition variant
#unset MSNEDISmod ; Roger Enns's MSnEDIS variant with staged injection
#unset MSNS ; Magnus Bjelk's MSnS ignition variant
# set MSNS_EXTRA ; James Murray and Phil Ringwood's MSnS extensions
#unset MS_ECU ; Robert Hiebert's EEC-IV replacement code
#unset MS_I ; Bowling and Grippo MegaSquirt
#unset MS_II ; Bowling and Grippo MegaSquirt-II
#unset MSpark ; Tom Hafner's MegaSpark variant
#unset PIC_SQUIRT ; PIC squirt