CRC has a throttlebody and carb cleaner - that and a small soft brush (like a toothbrush) would work fine. i would recommend removing the throttlebody for that. or you could just brush it all out dry like i do. i usually wipe the throat of the TB and intercooler outlets at the end of the racing season. i pull the hot and cold pipes spray them down with dish soap/water mix and pull some rags through them. coathanger method for that. by the time i have it all back together it's probably dry.