Originally Posted by
notroubleclubber
So what your saying is i can do the complete mfi to efi swap using a donor xr2i? My mfi head needs a rebuild so would use the efi head and use a sierra pulley system for the cps.Then i can use everything else from the xr2i and will use my mfi charge carrier as its nice and polished and make it fit somehow!!
Am i correct?
Once the efi is installed is it ok to turn up the boost to say 15psi and the fuel will automatically be adjusted?
I dont know about the XR2i loom, but you can use the complete head and inlet without any problems, they are the same as the Fiesta RS Turbo items. You can use your charge carrier, the hose connecting it to the throttle body may be tight but use a silicone hose and a very light smearing of fairy liquid and it'll go on.
As for the boost, you should get the car set up by a tuner initially, if only to get the CO levels right. Once that is done, the ECU and EDIS module should work out the ignition and fueling based on how much boost the MAP sensor sees. You will need a 195 chip and Beige 701 injectors to run that much boost though.
Hope that helps
Lee
