I've been having a problems with my spark plugs fouling lately due to carbon build up. I've had the gm stage 2 kit with aem intake and gm exhaust for about 1 year with no problems until now. I've tried different heat ranged plugs and still the same problem. What could this be.

 

They dont call it driving the **** out of it for nothing.Rev her up a bit.
Are you letting it sit idling for long periods of time.

You could have something wrong,
I have stage 2 and havent had any issues yet.