If you want turbo chatter you need EFI as the metering head of MFI muffles the sound.

OFAB and OFAC is the EFI management found on later front wheel drive fords which is a popular conversion and can be mapped to suit your engine specification however there are lots of other alternative management systems available which are even more capable such as the management found on Cosworths which I run on my little escort

I would consider talking to a tuner you use and take advise regarding what they have experience with mapping. Every system has good and bad points but in only as great as the mapper.

Having said that im happy with cossie management