ECS TUNING 3970647 Es High Flow Cat B8.5 A4/A5

( Brand: Ecs Tuning ), ( Type: Cat ), ( Manufacturer Part Number: ES 3970647 )

Review ECS TUNING Frazzlekits.com Es#3970647 Audi B8.5 A4/a5 High Flow Cat fits B8 A4 A5

Introducing the ECS Tuning ES3970647 High Flow Catalytic Converter, a must-have upgrade for Audi B8 and B8.5 models of the A4 and A5. This high-performance catalytic converter is designed to deliver enhanced power and improved exhaust flow for your vehicle.

The ES3970647 catalytic converter is a direct replacement for the stock component, ensuring a seamless installation process. It is made from premium materials, including a high-flow monolithic substrate, that provides increased surface area for better catalytic conversion efficiency. This results in reduced backpressure, improved airflow, and more power from your engine.

The high-flow design of this catalytic converter is ideal for those who seek to optimize the performance of their Audi B8 or B8.5 A4/A5. It allows for a freer exhaust flow, enabling the engine to breathe better and produce more power. The increased power output is noticeable, providing a more responsive and exhilarating driving experience.

The ES3970647 high-flow catalytic converter is also compatible with various exhaust systems and modifications, including aftermarket exhausts and performance chips. This flexibility makes it a popular choice among enthusiasts looking to enhance the performance of their Audi vehicles.

The ECS Tuning ES3970647 High Flow Catalytic Converter comes with a durable, high-temperature coating that ensures optimal performance under extreme conditions. The converter is also CARB-legal, making it an ideal choice for those who reside in California or other areas with strict emissions regulations.

Installing this high-flow catalytic converter is a straightforward process, and ECS Tuning provides detailed instructions and technical support to make the installation process as smooth as possible. With its superior performance, durability, and compatibility, the ES3970647 High Flow Catalytic Converter is an essential upgrade for any Audi B8 or B8.5 A4/A5 enthusiast looking to unlock the full potential of their vehicle.

ECS Tuning's part number ES 3970647 is a high flow catalytic converter designed for use in Audi B8 and B8.5 models of the A4 and A5. This part aims to improve the performance of the vehicle by increasing the exhaust flow and reducing backpressure. Here are the potential pros and cons of buying this high flow catalytic converter:

1. Improved Performance: By reducing backpressure and increasing exhaust flow, this catalytic converter can lead to improved engine performance, including better throttle response and increased power output.

2. Enhanced Driveability: The enhanced performance can also result in smoother and more responsive driving, making the vehicle more enjoyable to operate.

3. Fits OEM Location: This high flow catalytic converter is designed to fit in the original equipment manufacturer (OEM) location, making installation relatively straightforward and hassle-free.

1. Cost: High flow catalytic converters can be more expensive than standard replacements. This part, in particular, is a premium option.

2. Potential for Check Engine Light: Installing a high flow catalytic converter can potentially trigger the check engine light due to the different flow rates and exhaust gas characteristics. However, this can usually be remedied with proper tuning and calibration.

3. Emissions: The primary function of a catalytic converter is to reduce harmful emissions from the exhaust. A high flow catalytic converter may not be as effective at reducing emissions as a standard one, potentially impacting fuel economy and exhaust emissions.

The ECS Tuning ES 3970647 high flow catalytic converter offers several benefits, including improved performance, enhanced driveability, and a straightforward installation process. However, it also comes with some drawbacks, such as a higher cost, potential check engine light issues, and reduced emissions effectiveness. Ultimately, the decision to purchase this part depends on your individual priorities and preferences. If you prioritize performance and driveability, this part may be a good investment. However, if you are more concerned with fuel economy and emissions, a standard replacement catalytic converter may be a better choice.

part # 3970647 price

• $299.00

specifications frazzlekits:

• for models: B8, A4, A5
• for makes: Audi
• brand: Ecs Tuning
• type: Cat
• manufacturer part number: ES 3970647

seller frazzlekits:

• rating: 100.0%
• # reviews: 296

general frazzlekits:

• condition: Used
• Car Truck Parts Accessories > Exhaust Emission Systems > Exhaust System Kits

returns frazzlekits:

• policy: No Returns

offer frazzlekits:

• started: March 24, 2026
• availability: In Stock
• quantity: 1
• best offers: True
• options: Ship-to-home
• sold: 0

payments frazzlekits:

• wallet: Google-pay
• credit card: Discover
• other

shipping frazzlekits:

• carrier: FedEx
• cost: $0.00
• transit: 4-10 Days
• type: Calculated
• service: FedEx Ground Economy
• class: Economy

Ecs Tuning 3970647 Is Similar To:

• Ecs Es#3546964 B8/8.5 2014 Audi A4 Quattro Tuning Center Resonator Delete 2.0t Single Exit (19.4% similar) $200.00. (August 3rd, 2025)
• Ecs 023245ecs01-02kt Tuning Axleback Exhaust Kit For Mk7 Volkswagen Gti (33.6% similar) $280.00. (February 9th, 2026)