hi there
there appear to be several reasons why megajolts are used
height of efi unit and space etc
lack of tunability etc
late zetec ecus had in built immobilisers (hard to bypass)
and just personal preferences
loads of people have used the stock efi and ecu and are happy running in standard trim
but if you want radical cams/carbs/throttle bodies etc you,ll need an ecu you can remap to get the best from them
all the best
les g
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