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Audi B9 S5 Quattro 3.0T

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Audi B9 S5 Quattro 3.0T Performance Engine Parts

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Unitronic Carbon Fiber Intake System 3.0TFSI B9 S4/S5

ES#4362353 - UH017-INA - Unitronic Carbon Fiber Intake System 3.0TFSI B9 S4/S5 - Engineered for seamless integration within the engine bay and improves the performance, look and sound of your vehicle. - Unitronic - Audi

Engineered for seamless integration within the engine bay and improves the performance, look and sound of your vehicle. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Unitronic - Corporate Logo
ES#:
4362353
Mfg#:
UH017-INA
Ships in 6 Business Days
$1469.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Universal Valved Muffler Kit - Single Inlet / Dual Outlet - 2.5" (63mm) - 2 Mufflers

ES#5457424 - UVM63MMDUALOUTX2 - Universal Valved Muffler Kit - Single Inlet / Dual Outlet - 2.5" (63mm) - 2 Mufflers - Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button - Valvetronic Designs - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Valvetronic Designs - Corporate Logo
ES#:
5457424
Mfg#:
UVM63MMDUALOUTX2
Ships in 2 Business Days
$599.99 USD
Free Shipping

Audi / Porsche 2.9L 3.0L EA839 Water-Methanol Injection System Kit

ES#4715348 - 01-839-02150-9 - Audi / Porsche 2.9L 3.0L EA839 Water-Methanol Injection System Kit - Complete Bolt-On System, Compatible with stock & modified applications, and all hardware & gaskets included! - Weistec - Audi Porsche

Complete Bolt-On System, Compatible with stock & modified applications, and all hardware & gaskets included! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Weistec - Corporate Logo
ES#:
4715348
Mfg#:
01-839-02150-9
Ships in 2 Business Days
$1799.00 USD
Free Shipping

Weistec Audi / Porsche VAG EA839 3.0T W.3 Turbo Upgrade

ES#4715588 - 01-839-02087-8 - Weistec Audi / Porsche VAG EA839 3.0T W.3 Turbo Upgrade - 100% Bolt-on installation / Upgrade. You are required to ship Weistec your OE turbochargers as a core. - Weistec - Audi Porsche

100% Bolt-on installation / Upgrade. You are required to ship Weistec your OE turbochargers as a core. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
You are required to ship Weistec your OE turbochargers as a core.

Brand:
Weistec - Corporate Logo
ES#:
4715588
Mfg#:
01-839-02087-8
Ships in 2 Business Days
$2199.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ARMYTRIX Sport Cat-Pipe

Sport Cat-Pipe with 200 CPSI Catalytic Converter - Increase power, reduce weight, and improve sound! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Armytrix - Corporate Logo
ES#:
4164584
Mfg#:
AU94S-CD
Ships on Nov 19, 2026
$2618.00 USD
Free Shipping

Cat-Back Exhaust System - Non-Resonated With Valves

2.50" stainless steel with quad GT100 burnt titanium tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits models with factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3499455
Mfg#:
SSXAU713
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$4405.99

This product was last offered at the strikethrough price on
10-26-2026

$3964.67 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Non-Resonated With Valves

2.50" stainless steel with quad JET-100 carbon tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits models without factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3493663
Mfg#:
SSXAU684
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$3874.99

This product was last offered at the strikethrough price on
10-26-2026

$3487.02 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated With Valves

2.50" stainless steel with quad GT-100 Cerakote black tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits models without factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3493581
Mfg#:
SSXAU680
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$3752.99

This product was last offered at the strikethrough price on
10-26-2026

$3377.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated With Valves

2.50" stainless steel with quad GT-100 titanium tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits models with factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3499453
Mfg#:
SSXAU708
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$4193.99

This product was last offered at the strikethrough price on
10-26-2026

$3774.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Non-Resonated With Valves

2.50" stainless steel with quad polished oval tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits models with factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3499460
Mfg#:
SSXAU714
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$3741.99

This product was last offered at the strikethrough price on
10-26-2026

$3367.61 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Non-Resonated With Valves

2.50" stainless steel with quad GT-100 polished tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits models without factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3493660
Mfg#:
SSXAU685
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$3506.99

This product was last offered at the strikethrough price on
10-26-2026

$3155.75 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated With Valves

2.50" stainless steel with quad GT-100 burnt titanium tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits models without factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3493582
Mfg#:
SSXAU682
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$4651.99

This product was last offered at the strikethrough price on
10-26-2026

$4186.16 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated With Valves

2.50" stainless steel with quad GT-100 polished tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits models with factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3499452
Mfg#:
SSXAU706
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$3752.99

This product was last offered at the strikethrough price on
10-26-2026

$3377.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated With Valves

2.50" stainless steel with quad GT-100 titanium tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits models without factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3493649
Mfg#:
SSXAU681
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$4193.99

This product was last offered at the strikethrough price on
10-26-2026

$3774.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Non-Resonated With Valves

2.50" stainless steel with quad GT100 burnt titanium tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits models without factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3493659
Mfg#:
SSXAU688
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$4405.99

This product was last offered at the strikethrough price on
10-26-2026

$3964.67 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Non-Resonated With Valves

2.50" stainless steel with quad GT-100 titanium tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fits models without factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3493662
Mfg#:
SSXAU687
Ships on Nov 19, 2026
ON SALE! SAVE 10%
$3947.99

This product was last offered at the strikethrough price on
10-26-2026

$3552.51 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Engine Parts

Our name says it all. That's why ECS Tuning is dedicated to providing our customers with the broadest possible assortment of engine tuning options at a range of prices and options to fit any budget. Start small and grow your car into something special with performance engine upgrades from a company that has tuning in its name and its blood.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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