how to get rid of excess carbon build up inside the engine?
take off the 3000 pipe when engine is hot, with a spray bottle(like windex-type) full of clean water, spray it into the throttle body... dont pour it in there, but mist it. dont use a lot, i cannot stress that enough. sparingly is the key.
*disclaimer*
i do not take any blame in harm caused by this method. it will work if used as described. if too much water is applied, it will hydrolock.