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Sales & Specials

New B9 S4/S5 ECS High-Flow Catalytic Converter

The perfect way to unleash hidden horsepower in a modern turbocharged engine is to upgrade the restrictive factory catalytic converter with a smoother, higher flowing unit. This is a great way to increase performance & add a nice growl to the exhaust note. Ideal performance is achieved through expelling exhaust gasses at maximum velocity through a less-restrictive catalytic converter. We measured maximum gains of +34WHP & +41ft/lbs of torque on our Audi B9 S4 with a stock tune when equipped with an ECS Kohlefaser Luft-Technik Intake System, ECS X-Pipe, & Intercooler/Charge Pipe kit.


Unleash Hidden Horsepower

For Your Audi B9 S4/S5 3.0T

Audi B9 S4/S5 Cast Stainless Steel High Flow Catted Downpipe
Unleash up to 34 WHP with an ECS High Flow 200 Cell Catalytic Converter / Downpipe -- Includes complete install kit
Brand: ECS - Corporate Logo
ES#: 3979009
Mfg#: 025257ECS03KT1

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$816.95 $694.41
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Audi B9 S4/S5 3.0T Luft-Technik Intake System
Enhance your engine's performance with gains up to 16 Wheel Horsepower and 15 foot pounds of torque with our ECS Cold Air Intake
Brand: ECS - Corporate Logo
ES#: 3477816
Mfg#: 023795ECS06

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$352.95 $300.01
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Silicone Turbo Inlet Hose
Flexible silicone smooths the intake tract & hinders collapsing. The ultimate in durability!
Brand: ECS - Corporate Logo
ES#: 3420204
Mfg#: 024360ECS01

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$61.95 $52.66
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B9 S4 3.0T Center X-Pipe
Sound great and save weight! Eliminate the center resonator on your OE system for a more aggressive exhaust note
Brand: ECS - Corporate Logo
ES#: 3521607
Mfg#: 024365ECS01KT

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$275.95 $234.56
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Audi B9 S4 Charge Pipe Kit
Increase intake air flow with our high flow charge pipes for your ECS Tuning or OEM intercooler!
Brand: ECS - Corporate Logo
ES#: 3638868
Mfg#: 023880ECS01AKT

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On Order, ETA Oct 22, 2019
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$306.95 $260.91
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Manufacturer names and/or part numbers are used only for identification purposes.

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