mfi has poor fuel control, hardly any adjustment for ignition, less mpg, poor emissions, limited to around 200bhp otherwise you end up with having to over fuel it low down to fuel it at the top.

the list goes on and on, plus with age the mfi becomes unrealiable too


with efi, and a nice running engine you can get a msd chip pre mapped/ specced to suit your spec ect as you would with a cossie, it runs coilpack as standard too.

which means
better fueling, no having to just set it up the best you can
better ignition, hence less det
better mpg/ emissions
its endless, to be honest unless its a standard car im surprised anyone is still using mfi

much more potential for more power now that after you get bored you can just unplug the efi ofab/ofac ecu and plug in a fully mappable ofam aftermarket ecu from boost monkeys for £389.99 and with people like stu at msd saying he is willing to mapp them, means its a great product, and with this route the sky is the limit