The engineers at FAST designed this all-new laptop-tunable ECU to appeal to customers and dealers with simple EFI needs but who prefer the greater flexibility afforded by laptop tuning. The XFI Street Engine Management System provides a cost-effective option for those customers who don't need the most high-end system but also want complete control. Since XFI Street(TM) uses the same wiring as the EZ-EFI it could easily be installed in place of an existing EZ-EFI ECU. Utilizing included C-Com software XFI Street can be used to tune an engine whose characteristics are not ideal for the self-tuning features EZ-EFI provides. The XFI Street Engine Management System has data logging capability when connected to a laptop. The unit is offered in kits with an EZ four-injector throttle body and with or without a multi-port harness. It is intended only for naturally aspirated engines.
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