Ok i have the stage two hahns craft turbo kit. ITs been turboed for about 12000 miles. Now ive been experiancing some stuff. When i take off ( at any speed) sometimes it feels like it being slugish or something. ITs kind of hard to explain. Also eveynow and then when im idling the RPM will drop to like 750 and back really quick and it will do it a few times. What do you think it is?

do you think its a fuel, clutch, or air thing?