Hi folks! Does anybody know if its possible to change program in EEC-IV boxes? If how to do? I going to turbocharge my 1990 Ford Aerostar 4 litre V6 engine but dont know how to give it more fuel when i have overpressure in the manifold, maybe leave the original computer like it is and apply an additional injection (Haltec) or what to do??? Please help me Jan Edwards