its called twin charging, and the 1G actually had a twin charged model, i dunno if it was factory or a HKS kit but there was one, and from what i hear, it is WAY too much stuffing around, u would be better off spending your money on a new turbo/s setup thats been tuned to meet your specifications...
in short, u will never get it working properly, and if u do you would have spent WAY too much on it...