2009 Toyota Corolla was whacked and the air intake resonator is wrecked. The part is $300+ from Toyota and is backordered. Can it be bypassed and still function fine?
According to Toyota it is necessary:
https://autoparts.toyota.com/products/product/resonator-intake-ai-178930t020
The Intake Air Resonator (#17893-0T020), an essential Engine-Fuel part of the Air Cleaner system, plays a vital role in regulating and stabilizing the airflow into the engine. It dampens the noise produced during the intake process and helps in maintaining optimal air-fuel ratio for combustion. This Toyota part, backed by Toyota's genuine parts warranty, is crafted for compatibility with specific vehicle models. As with any part, the Intake Air Resonator (#17893-0T020) is subject to wear and tear. If it becomes old, clogged, or defective, it can disrupt the air-fuel mixture, potentially leading to increased fuel consumption, decreased engine performance, and elevated emission levels. Therefore, periodic replacement is crucial. In addition to supporting engine efficiency, this part also aids in maintaining a quieter and smoother ride, contributing to the overall safety and performance of your Toyota vehicle.
This Amazon vendor claims to have one:
https://www.amazon.com/Toyota-17893-0T020-Air-Intake-Resonator/dp/B01F7S0QV2
This discount Toyota parts vendors says they can ship in 1-2 days:
https://www.toyotapartsdeal.com/oem/toyota~resonator~intake~air~17893-0t020.html
You can probably find more by searching the part number 17893-0T02.
Another possibility would be a good used one from a junkyard.
The engine for the most part will run ok without the intake resonator but will lose a little bit of horsepower and run slightly rich.
The air intake resonator basically helps the engine suck more air into the piston cylinder by reducing intake air back pressure waves. Similar to how variable length intake manifold runners reduce back pressure waves.
This video explains how air intake resonators work. It's basically an empty chamber that absorbs back pressure waves.
