Top Mods for your Audi B9 S4 3.0T
ECS loves helping you make your car all it can be; that's why we've put all the top-of-the-line performance parts for your AUDI B9 S4 together in one place. This list, compiled by our own AUDI gurus, is everything you need to outfit your car with all those goodies you've wanted for your build. Let's make race season even more fun with all the best performance parts for your Audi B9 S4!
Hand Selected By Our Team Of Enthusiast
For Your
Audi B9 S4 3.0T
B9 A4/A5/S4/S5 Quattro Adjustable Damping Coilovers
Features 32 way adjustable damping, variable length and zinc-coated shock bodies
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Models with Dynamic Chassis Control (DCC) will require DCC Cancelers
Models with Dynamic Chassis Control (DCC) will require DCC Cancelers
Brand:
ES#:
4474122
Mfg#:
000745LA01
Dynamic+ Lowering Springs
Engineered to improve handling and deliver superb ride quality!
Brand:
ES#:
3491530
Mfg#:
034-404-1005
Sport Springs - Set
Finally, A performance lowering spring for your B9 chassis Audi - Offering unrivaled comfort and performance
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We Price Match - Give Us A Call or Chat!
We Price Match - Give Us A Call or Chat!
Brand:
ES#:
3187941
Mfg#:
50357
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Availability:
In Stock
In Stock
Dynamic+ Adjustable Rear Sway Bar
Designed to combat understeer while reducing body roll under hard cornering!
Brand:
ES#:
3241098
Mfg#:
034-402-1010
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
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Brand:
ES#:
3477816
Mfg#:
023795ECS06
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Availability:
Ships on Oct 7, 2026
Ships on Oct 7, 2026
Audi B9 S4/S5 3.0T Kohlefaser 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 Carbon Fiber Cold Air Intake
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Brand:
ES#:
3545247
Mfg#:
023796ECS04
B9/B9.5 S4 & S5 3.0T IE Carbon Fiber Intake System
One-Piece carbon fiber construction that adds up to +16HP/TQ
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Brand:
ES#:
4346278
Mfg#:
IEINCK3
P34 Cold Air Intake
034Motorsport's P34 Cold Air Intake System delivers improved power, sound, and acceleration
Brand:
ES#:
4381931
Mfg#:
034-108-1028
Audi B9 S4/S5/SQ5 3.0T Big Bore Cast Aluminum Turbo Inlet Pipe
Remove the plastic and reduce restriction at your turbo
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Brand:
ES#:
3647752
Mfg#:
027714ECS01
APR Front Mount Intercooler System - B9 S4/S5 3.0T
Massive front mounted upgrade that dramatically reduces intake air temperature (IAT), minimizes heat soak, and provides increased performance!
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Brand:
ES#:
3613172
Mfg#:
IC100023
Audi B9 S4 Luft-Technik Intercooler and Charge Pipe Kit
Full kit to upgrade your charge pipes and front mount intercooler
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Brand:
ES#:
3639384
Mfg#:
023880ECS01AKT1
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Availability:
Ships on Oct 12, 2026
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Ships on Oct 12, 2026
FDS Front-Mount Intercooler Kit - Silver
Increase horsepower and eliminate heatsoak - Drop-in intercooler requires no cutting, trimming, or mods!
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Brand:
ES#:
3470702
Mfg#:
IETPCK1
B9 S4/S5 Post Throttle Valve Charge Pipe Kit - Wrinkle Red
Ditch the plastic and increase air flow!
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Brand:
ES#:
3579787
Mfg#:
024313ECS01-02KT
VW MK8 2.0T / Audi 3.0T Diverter Valve Spacer - Clear Anodized
Let your turbo blow off some air for an exhilarating driving experience!
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Brand:
ES#:
4033242
Mfg#:
028495ECS01
Audi B9 S4 Intercooler Charge Pipe Kit
Increase intake air flow with our high flow charge pipes for your ECS Tuning or OEM intercooler!
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Brand:
ES#:
3638868
Mfg#:
023880ECS01AKT
Stage 1 IE Performance ECU Tune - Includes Stage 1 TCU Tune & POWERlink Cable
Average gain of 138 horsepower and 178 lb-ft of torque on 91 Octane with stock hardware
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Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.
Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.
Brand:
ES#:
4418875
Mfg#:
IESOVZ11TCU
Stage 1 IE Performance ECU Tune With POWERlink Cable
Average gain of 138 horsepower and 178 lb-ft of torque on 91 Octane with stock hardware
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Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.
Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.
Brand:
ES#:
4418872
Mfg#:
IESOVZ11
Unitronic Performance Software - Stage 1+ - With UniCONNECT+ Cable
Gain up to 100 horsepower and 112 lb-ft of torque on 93 Octane
This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th
Brand:
ES#:
4375901
Mfg#:
30T-EA839-1+-UC
Silicone Turbo Inlet Hose - Audi B9 S4/S5
Flexible silicone smooths the intake tract & hinders collapsing. The ultimate in durability!
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Brand:
ES#:
3420204
Mfg#:
024360ECS01
APR Upgraded Ignition Coils - Red - Set Of Six
Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark!
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CARB certified for sale in all 50 states
CARB certified for sale in all 50 states
Brand:
ES#:
4030593
Mfg#:
MS100192KT2
EO#:
D-783-5
Audi B9 S4/S5 3.0T Performance Baffled Oil Catch Can System
Keep your intake tract clean and carbon free
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Brand:
ES#:
4044357
Mfg#:
023952ECS01KT
Audi B9 S4/S5 Sportback 3.0T Valved Exhaust System
ECS evolutionary design and manufacturing, blending with raw emotion, desire and passion, creating a truly unique driving experience
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Brand:
ES#:
4369839
Mfg#:
026018ECS
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Availability:
In Stock at Vendor
In Stock at Vendor
B9 S4/S5 Cat-Back Exhaust System - Non-Resonated (Louder)
2.50" stainless steel with quad GT-100 cerakote black tips
Fits models with factory rear sports differential
Brand:
ES#:
3466846
Mfg#:
SSXAU701
IE Performance Cast Downpipe
Features a TIG-welded 304 stainless and investment cast body and offers gains up to 45HP & 41TQ
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Brand:
ES#:
4473979
Mfg#:
IEEXCK3
IE Midpipe Exhaust Upgrade
Aggressive sound, quality finish, reliable operation, straightforward install, and affordable fun.
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Brand:
ES#:
4489116
Mfg#:
IEEXCK4
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
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Brand:
ES#:
3521607
Mfg#:
024365ECS01KT
Billet Aluminum Front Strut Brace - Audi B9 A4/A5/S4/S5/RS5
Provides additional support to the strut towers for flex reduction to enhance your driving experience
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Brand:
ES#:
3188267
Mfg#:
019218ECS01
Billet Aluminum Transmission Mount Insert
This billet aluminum insert is designed to fill the large void in the factory transmission mount
Brand:
ES#:
3176060
Mfg#:
034-509-4053
Transmission Mount Bushing Insert Kit
Decrease transmission mount slop for better drivetrain response!
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Brand:
ES#:
3170153
Mfg#:
019209ECS01