In my opinion, That car will never run correctly with the maf in that intake pipe. It can be made to run but not up to my standards for Drivability, response, mileage and power.
As for the 255, Its no where near enough fuel for the ID2000 and a GT35R on E85. Rewiring off a relay with will help for sure but the main limiting factor is the fuel lines and rails. Once the lines are -6 up and back, The flood gates will open and you will have plenty of fuel.