Well my piggy back smt6 is on the fritz , the injector circuit earths all the time so im thinking its the transistor but i'm having trouble working out where i can get one or if i can susbstitute it for something else .
here's a piscture of the little bugger


main number is IPS021 , if i google all the numbers i don't get very far . Could i use a megasquirt component ?
Any ideas guys