The exhaust oxygen (O2) sensor is a device that measures the amount of oxygen in the exhaust gases produced by an internal combustion engine. The O2 sensor is positioned in the exhaust system, typically before the catalytic converter, and sends signals to the engine control module (ECM) to regulate the air-fuel mixture.
The air-fuel mixture in a gasoline engine should ideally be a stoichiometric ratio of 14.7 parts air to 1 part fuel, which provides the best balance of performance, fuel efficiency, and emissions. The O2 sensor measures the residual oxygen in the exhaust gases and sends signals to the ECM to adjust the air-fuel mixture. This helps to ensure that the engine is operating at optimal performance, efficiency, and emissions.
If the O2 sensor fails or is damaged, it can cause the engine to run rich or lean, leading to poor performance, increased fuel consumption, and increased emissions. It is important to have a functioning O2 sensor for the proper operation of the engine and the vehicle.
People may need to install a new oxygen (O2) sensor after installing an aftermarket downpipe for several reasons:
Compatibility: The aftermarket downpipe may have a different size or shape than the original exhaust, making it necessary to install a new O2 sensor that is compatible with the new pipe.
Emissions: The O2 sensor helps regulate the air-fuel mixture, ensuring that the engine runs efficiently and produces minimal emissions. The new downpipe may affect the exhaust flow and emissions, making it necessary to install a new O2 sensor to maintain proper operation.
Tuning: An aftermarket downpipe can change the exhaust flow and affect the engine's performance. Installing a new O2 sensor can help to fine-tune the engine's performance and ensure that it runs smoothly after the modification.
Malfunction: The new downpipe may cause the original O2 sensor to fail or malfunction, requiring replacement.
It is important to note that installing an aftermarket downpipe can also affect emissions and may be illegal in some areas, so it's important to check local laws and regulations before making any modifications.
Comes with Adjustable Gas Flow Inserts
Professional Installation is HIGHLY Recommended!
All products are shipped out from one of the Signature Autohaus shipping locations. Signature Autohaus drop ships some products and ships direct others. All products are shipped via FedEx, UPS, DHL or another qualified shipping carrier.
Special arrangements may need to be made for international orders and oversize packages.
In the event a product arrives damaged to your location, please follow the steps listed below. All damaged items must be reported to the shipping carrier immediately and you must notify Signature Autohaus within 5 days of receiving your order. If these steps are not followed, your shipment may not be able to be a candidate for a claim.
Complete the Shipping DAMAGE Claim Form by contacting the carrier that delivered your package.
1) Keep the product and its original packaging and box
Make a list of the damaged or lost item(s)
2) Signature Autohaus will contact the shipper once we receive the email info above to schedule a pickup, DO NOT send it back to us
3) Once the product is picked up and inspected by Signature Autohaus and or Supplier, a replacement or credit will be issued.
4) The Shipping Rates shown at time of checkout our dimensional rate only. If your shipment weight is to much then contact us for a shipping quote. If there is an error in the shipping rate quoted we will contact you and let you know of the changes. International orders(Outside the USA) are not automatically processed as we may require additional information from you.
If a product is ordered and not wanted, the UNUSED item can be returned for a 35% restocking fee. Shipping is not refundable in either direction. All items wanting to be return MUST be reported within 30 days of the original invoice date. No items will be returnable after 30 days. All products shipped from the Signature Autohaus warehouse are shipped via FedEx or Freight and require a signature when delivered. Some packages shipped from the manufacturer may or may not require signatures for package release. Fedex, UPS, and DHL have package pick up locations if you are unable to sign for the package. If the package is returned to Signature Autohaus or manufacturer, you will be responsible for the return shipping costs and pay a 35% restocking fee. These fees will be charged to your account on file.
SIGNATURE AUTOHAUS DOES NOT REFUND SHIPPING CHARGES. If you modify, install, or alter the item in any form, we cannot accept it as a return, will not cover any expenses related to the product or installation, and you maybe be required to purchase a replacement.
In the event that the product you ordered is sent either incorrectly or processed wrong by Signature Autohaus, we will arrange for the package to come back to us and ship out a replacement. We will evaluate the situation before we determine the shipment was incorrect.
To return a item back to us, please do the following:
1. Contact our Customer Service Department to receive a RMA number. All packages returned without a Returned Merchandise Authorization number will be refused.
2. Package the item up in original packaging unless deemed unuseable
3. Include the UNUSED parts and any additional information that was included
4. Include a copy of your receipt
5. Write a brief description of the problem with the product
6. If you have a receipt for the return shipping include as well
7. We DO NOT accept any freight collect packages
8. Once we have received the above information we will notify you via email or phone and let you know the status.
