i recently got a hold on the mpfi setup (complete) and the whole ex harness. would i be at a better start by using the whole harness or rigging the ecu connectors?
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If your car is a 90-91 then I would swap the entire harness if your afraid to deal with wiring. You just gotta pay attention to what plug goes where. If its a 88-89 then just do the conversion

 

Another question that just popped up. i got this setup from an EX model i do not know if it was the 1.5l or 1.6l (is it all the same?) the replacement injectors i bought are for the 1.6 even tho my motor is still a 1.5 did i 'ef' up??? i just figured that the inj are designed to work for the setup that i bought. thanks ahead of time