New B9 A4 and A5 2.0T ECS High Flow Cat
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. Ideal performance is achieved through expelling exhaust gasses at maximum velocity through a larger internal diameter and a less-restrictive catalytic converter.
Through multiple design iterations and stringent product testing, we have engineered our High Flow Catalytic Converter to not only free up horsepower, but to provide trouble-free installation.
Go With The Flow
For your Audi B9 A4/A5 2.0T
Audi B9 A4/A5 2.0T High Flow Catalytic Converter - (NO LONGER AVAILABLE)
Unleash up to 14 WHP with an ECS High Flow 200 Cell Catalytic Converter -- Includes complete install kit
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For vehicles up through 2020
For vehicles up through 2020
Brand:
ES#:
3624402
Mfg#:
025258ECS01KT
No longer available
(2017+) B9 A4/A5 2.0T Kohlefaser Luft-Technik Intake System
Engineered for dyno proven performance and show quality looks!
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Does not fit models equipped with a MAF sensor (DBPA or DPAA engine codes) - Please verify prior to order
Does not fit models equipped with a MAF sensor (DBPA or DPAA engine codes) - Please verify prior to order
Brand:
ES#:
3143733
Mfg#:
019183ECS01
B9 T304 Stainless Steel 3.0" Downpipe
Let your engine breathe with the ECS 3.0" downpipe and front resonator delete!
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Brand:
ES#:
3241024
Mfg#:
021616ECS01
No longer available
Audi B9 A4/A5 2.0T Center Resonator Delete
Add an aggressive exhaust sound with this Resonator Delete Pipe Kit! Deletes rear-most resonator.
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Brand:
ES#:
3576157
Mfg#:
023492ECS01KT
Luft-Technik B9 A4 Intercooler And Charge Pipe Kit
Full kit to upgrade your charge pipes and FMIC
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Brand:
ES#:
3557444
Mfg#:
019219ECS01AKT2
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Availability:
Ships on Oct 12, 2026
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Ships on Oct 12, 2026
B9 A4/A5 4" Direct-Fit Exhaust Tips - Chrome - Pair
A pair of direct-fit exhaust tips for the B9 A4/A5. No modifications necessary
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Brand:
ES#:
3476950
Mfg#:
019490ECS02KT
B9 A4/A5 4" Direct-Fit Exhaust Tips - Black Chrome - Pair
A pair of direct-fit exhaust tips for the B9 A4/A5. No modifications necessary
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Brand:
ES#:
3476949
Mfg#:
019490ECS01KT
This product has been superseded to
ES#4017429
Silicone Turbo Inlet Hose - (NO LONGER AVAILABLE)
Flexible silicone smooths the intake tract & provides unimpeded airflow. The ultimate in looks and durability!
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Brand:
ES#:
3176611
Mfg#:
019216ECS01
No longer available