There are a couple of complete Mercruiser EFI setups on EBAY, how hard is the conversion from a carbed motor to the Mercruiser EFI setup? What sensors are involved? Is the fuel system issue? Are there any wiring issues? Most of the auctions state that everything is included, has anyone done this and compiled a complete list of required parts? My current motor is a brand new 454HO which has retangular port heads, are the Mercruiser EFI intakes retangular port intakes? Will the ECM need to be reprogrammed for my motor?
Is it worth changing? I have the alum intake that came with the motor from GM and the stock carb on it now. Can I expect a performance gain with the EFI system?
1994 Baja 260