What does an air oil separator do WRX?

An Air/Oil Separator has one job, remove the oil from the engine ventilation system so the oil does not get sent through the intake system.

Is Air oil Separator necessary?

If you have a direct injection engine, you should have an AOS. When you go bigger on horsepower, you should have a quality AOS. Even if your vehicle is otherwise stock, and AOS can greatly improve performance and economy over time. They work well when installed correctly, it’s the right product for your engine.

Does an air oil separator increase horsepower?

“Not only does an air-oil separator system keep the intake track cleaner, it increases performance by not allowing harmful deposits to form on critical components or in critical areas,” Schroeder said. While a catch can seems fairly simple in its operation, there is often more to it than meets the eye.

How long does an oil separator last?

The oil separator/PCV unit of the 2.0T should be preemptively replaced with a new one every 50,000 miles.

Is IAG AOS CARB legal?

According to the BAR who runs the smog program, an AOS is legal as long as all of the routing is the same as stock. According to CARB, these devices don’t require an EO from a Smog Check perspective as long as they remain a sealed system.

Will installing an air oil separator void warranty?

Oil separator will not void warranty. Even the owner’s manual suggest you to add oil separator on if you drive it hard. Manual also states all tech/base cars need coolers if you drive them hard. Adding them will void the warranty.

When should I replace my oil separator?

Signs that the part is failing or becoming worn Usually when the air-oil separator begins to malfunction, your car will warn you in various ways. You may notice oil leaks, concerning dark smoke being released from your exhaust, or the illumination of the check-engine light.

What is the difference between an air oil separator and a catch can?

The major difference is that the AOS separated air and oil and let the oil drip back to the oil pan while the catch can traps oil in a can. This is because air oil separators have more baffles than the oil catch can. When using an oil catch can you will need to empty the captured oil regularly.

Does AOS need a tune?

The advantage of the Street AOS is that because it retains the same connections and intent as the factory plumbing, you can install the Street AOS without needing to tune the car for it.

Do I need a tune with IAG comp AOS?

You do not need a tune for an AOS.