FamousCoops

I just bought a 93 legacy turbo it,s been superchipped etc.Problem is its been stood for 10 months when i tried to start it it only ran on three cylinders (plugs etc are ok)it seems to be over fuelling i think ,is there a cold start switch/ fifth injector or something as it wont restart without clamping the fuel line but as soon as it begins to fire and the fuel is unclamped it floods again, maybe i thought that the cold start could be the problem? I know nothing about this beast any info on any aspect of its working's would be helpful thanks.