[Evil-Bee-NH]

Originally Posted by cellsafemode

If you're concerned with buildup, just pop off your intake bridge from the throttle body. Run some paper towel or finger around the inside of the plastic and visually inspect the throttle body. If you see a decent amount of black on the throttle body or any oil from inside the intake bridge ...then you would greatly benefit from a catch can.

If you dont, you can still benefit from a catch can, since how dirty your intake gets is very dependent on the changing driving conditions you put the car thru.

Either way, a good maintenance procedure for direct injected engines is to throw a can of injector cleaner into the intake every oil change (just before the oil change).

If you do that, you should be golden.