Hi Scotty..good day! in cleaning the throttle body with, say CRC TB spray cleaner; is it necessary to remove the TB then spray clean it OR will it work without removing it from its screws the do the spray cleaning. If not removed, will there be any effects in the intake manifold going to the engine? There might be residual particles left after the cleaning and will stay inside. Thanks.

you can do it on the car, any residue will be sucked into the engine and burn, hurting nothing