jarrus
Pro Tuner
You'd have terrible fueling problems, like I said in another post your MAP sensor only reads negative pressure and you would be putting positive pressure though it so it would only inject the maximum fuel it is mapped/can read to which will be no wear near what is required and there for will run very hot and you will burn your pistons out,
about the only thing I can suggest that you can get around without replacing the ecu or adding 5th injector or replacing the MAP sensor is to go for a supercharger, then you can relocate the throttle body and map sensor to the other side of the compressor (so the throttle and map would be attached to the inlet of the supercharger) then the map sensor would only be reading negative pressures still, you won't need a dumpvalve as the forced induction part would be after the throttle and you could keep your standard ecu and just upgrade the injector and get is mapped and your dizzy set to suit, I would say now this is the best way for you to go without upsetting your engines electronics and would make for a far easier and neater install
about the only thing I can suggest that you can get around without replacing the ecu or adding 5th injector or replacing the MAP sensor is to go for a supercharger, then you can relocate the throttle body and map sensor to the other side of the compressor (so the throttle and map would be attached to the inlet of the supercharger) then the map sensor would only be reading negative pressures still, you won't need a dumpvalve as the forced induction part would be after the throttle and you could keep your standard ecu and just upgrade the injector and get is mapped and your dizzy set to suit, I would say now this is the best way for you to go without upsetting your engines electronics and would make for a far easier and neater install