Robbie02GT

Can any one help me i have a 2001 gt with full exhaust, cold air intake,75 mm t/b, 90mm mass air, kennie bell no intercooler 10.5 pounds,#36 injectors, twin svt focus pumps, sct 2 tune. The car has 4 dead cylinders on passenger side but the plugs are new and the coils checked out i also still have 26-47 pounds at injectors. it idles fine but as soon as you give it gas it spits and sputters and also i did a compression and leak down test and that checks out aswell. Someone told me it could be spun cam bearing or blower intake gasket is shot. I also had some coolant speal on my motor from heater return line split. It is in the shop now and it has stomped everyone there. Any help would be greatly appreciated!