I would first recommend cleaning the throttle body with a TB cleaner designed specifically for TBs. Drape a rag under the TB prior to cleaning. While the engine is cold, spray the throttle plate when closed and then full open. Scrub the entire area with a soft toothbrush. Let everything sit for 15 minutes and start the car.....you might see some smoke for a couple of seconds.
TB Cleaner - You will want something that is sensor safe. Some TBs also have a coating from the factory that typical carb and choke cleaner will remove. I only use carb and choke cleaner (Gumout) on my TR6 carbs and to remove oil and grease stains from my garage floor.
Brake cleaner......I'd have to check the contents but I don't think it's a good idea. If it were called Throttle Body and Brake Cleaner I would give it a try.
I would suggest replacing the PCV with a Toyota PCV.
You should feel a difference in performance.
Does anybody have any advice on cleaning out the throttle body on my 4a motor? It is burning up more oil than I believe it should and I have heard that cleaning the pcv valve and throttle body out usually solve this. Also hoping for minimal performance gains from this.