I wouldn't do that, it probably won't do anything. Use throttle body cleaner. I used so much once that the engine was spewing nasty white smoke for like 5 minutes at idle....but that means it's cleaning stuff out. What also works if you wanna clean out your cat converter (i've heard) is to fill your gas tank so high that you keep going until it almost spills over. When it starts, you'll run really rich.
