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Audi A3 Performance Engine Parts

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Unitronic Performance Software - Stage 2 - With UniCONNECT+ Cable

ES#4368657 - 18TSI-IS12-2-UC - Unitronic Performance Software - Stage 2 - With UniCONNECT+ Cable - Gain up to 87 horsepower and 106 lb-ft of torque on 93 Octane - Unitronic - Audi Volkswagen

Gain up to 87 horsepower and 106 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
Requires Unitronic 3 Inch Downpipe

Brand:
Unitronic - Corporate Logo
ES#:
4368657
Mfg#:
18TSI-IS12-2-UC
In Stock
ON SALE! SAVE 16%
$914.99

This product was last offered at the strikethrough price on
08-23-2026

$764.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IS38 Software Upgrade - For New Customers

ES#2996319 - STGIS38 - IS38 Software Upgrade - For New Customers - See up to 386 horsepower on 93 octane fuel! - APR - Audi Volkswagen

See up to 386 horsepower on 93 octane fuel! Call In Or Chat For Best Price!
This upgrade must be performed at ECS Tuning's facility in Ohio.
For new APR customers with Golf R/S3 IS38 turbocharger only. Tuning may only be performed in-house at APR dealers.

Brand:
APR - Corporate Logo
ES#:
2996319
Mfg#:
STGIS38
In Stock
$749.99 USD
Free Shipping

Stage I Performance Chip - 1 Program

ES#252756 - 20TCCTASTG1CHP-1 - Stage I Performance Chip - 1 Program - APR's ECU Upgrade is the best power per dollar modification for your engine out there - APR - Audi

APR's ECU Upgrade is the best power per dollar modification for your engine out there Call In Or Chat For Best Price!
This upgrade must be performed at ECS Tuning's facility in Ohio.
254hp/297lb-ft (93 octane) --- 250HP/294TQ (91 Octane). This upgrade can only be performed with the car present at our facility.

Brand:
APR - Corporate Logo
ES#:
252756
Mfg#:
20TCCTASTG1CHP-1
In Stock
$749.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 1 Software Upgrade - With Program Switching (Fully Loaded)

ES#1899519 - 20TMK6STG1CHP-4 - Stage 1 Software Upgrade - With Program Switching (Fully Loaded) - Average gain of 71 horsepower and 101 lb-ft of torque on 93 octane! - APR - Audi Volkswagen

Average gain of 71 horsepower and 101 lb-ft of torque on 93 octane! Call In Or Chat For Best Price!
This upgrade must be performed at ECS Tuning's facility in Ohio.
For vehicles with TSI engines only. This upgrade can only be performed with the car present at our facility.

Brand:
APR - Corporate Logo
ES#:
1899519
Mfg#:
20TMK6STG1CHP-4
In Stock
$749.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

K04 Performance Software (Existing APR Customers) - 1 Program (Or Fully Loaded If Already Equipped)

ES#3509816 - PA100008 - K04 Performance Software (Existing APR Customers) - 1 Program (Or Fully Loaded If Already Equipped) - For customers that already have APR software on their car and are upgrading to a K04 - APR - Audi Volkswagen

For customers that already have APR software on their car and are upgrading to a K04 Call In Or Chat For Best Price!
This upgrade can be performed via our Chip & Ship method or the vehicle can be brought to ECS Tuning's fa
For vehicles with FSI engines only. Ship your ECU for free, or drive your vehicle to our location

Brand:
APR - Corporate Logo
ES#:
3509816
Mfg#:
PA100008
In Stock
$249.99 USD
This product is lifetime replacement eligible Lifetime Replacement

RaceChip GTS Black With App Control

ES#4339268 - 913096 - RaceChip GTS Black With App Control - Get up to +43 hp and +63 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip - Race Chip - Audi Volkswagen

Get up to +43 hp and +63 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip

Brand:
Race Chip - Corporate Logo
ES#:
4339268
Mfg#:
913096
Ships in 6 Business Days
$749.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

European S3 Intercooler

ES#3492184 - 1K0145803P - European S3 Intercooler - All aluminum intercooler kit from the Audi S3 model - Improve your intercooler efficiency approx 30% - Nissens - Audi Volkswagen

All aluminum intercooler kit from the Audi S3 model - Improve your intercooler efficiency approx 30% We Price Match - Give Us A Call or Chat!
This intercooler can be installed with trimming your stock boost hose ends

Brand:
Nissens - Corporate Logo
ES#:
3492184
Mfg#:
1K0145803P
Back Ordered
$745.99 USD
This product is lifetime replacement eligible Lifetime Replacement

VWR R600 Intake Closed Airbox System - Foam Filter - Matte Carbon Fiber Lid

ES#4673590 - VWR1210R600EM - VWR R600 Intake Closed Airbox System - Foam Filter - Matte Carbon Fiber Lid - Closed airbox system for added filtration and performance - Racingline - Audi Volkswagen

Closed airbox system for added filtration and performance For vehicles without secondary air injection only

Brand:
Racingline - Corporate Logo
ES#:
4673590
Mfg#:
VWR1210R600EM
Ships in 6 Business Days
ON SALE! SAVE 10%
$824.99

This product was last offered at the strikethrough price on
08-29-2026

$742.28 USD
This product is lifetime replacement eligible Lifetime Replacement

VWR R600 Intake Closed Airbox System - Foam Filter - Gloss Carbon Fiber Lid

Closed airbox system for added filtration and performance For vehicles without secondary air injection only

Brand:
Racingline - Corporate Logo
ES#:
4673591
Mfg#:
VWR1210R600EG
Ships in 6 Business Days
ON SALE! SAVE 10%
$824.99

This product was last offered at the strikethrough price on
08-29-2026

$742.28 USD
This product is lifetime replacement eligible Lifetime Replacement

Stage 2 - With FlashZilla V3

ES#3098263 - cr-tdi-g-002KT - Stage 2 - With FlashZilla V3 - Average gain of 30 horsepower and 70 lb-ft of torque - Tunezilla - Audi Volkswagen

Average gain of 30 horsepower and 70 lb-ft of torque Vehicles equipped with DSG transmission require a DSG tune.

Brand:
Tunezilla - Corporate Logo
ES#:
3098263
Mfg#:
CR-TDI-G-002KT
Ships in 8 Business Days
$739.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water/Methanol Nozzle - 8GPH

ES#4362075 - SN0-N0800 - Water/Methanol Nozzle - 8GPH - Snow Performance Hyper-Sonic water-methanol injection nozzle - SnowPerformance - Audi BMW Volkswagen MINI

Snow Performance Hyper-Sonic water-methanol injection nozzle

Brand:
SnowPerformance - Corporate Logo
ES#:
4362075
Mfg#:
SN0-N0800
In Stock at Vendor
$31.99 USD
Free Shipping
on orders $49 and up

Stage 3 Boost Cooler (EFI - Port Injection) - Nylon Line

ES#4144931 - SN0-310 - Stage 3 Boost Cooler (EFI - Port Injection) - Nylon Line - Brings true 2D mapped water-methanol injection delivery to your EFI (Electronic Fuel Injected) and forced induction vehicle - SnowPerformance - Audi BMW Volkswagen MINI

Brings true 2D mapped water-methanol injection delivery to your EFI (Electronic Fuel Injected) and forced induction vehicle

Brand:
SnowPerformance - Corporate Logo
ES#:
4144931
Mfg#:
SN0-310
In Stock at Vendor
$729.99 USD
Free Shipping
on orders $49 and up

Stage 3 Boost Cooler (Direct Injection) - Nylon Line

ES#3557788 - SN0-320 - Stage 3 Boost Cooler (Direct Injection) - Nylon Line - Brings true 2D mapped water-methanol injection delivery to your DI (direct fuel injected) and forced induction vehicle - SnowPerformance - Audi Volkswagen

Brings true 2D mapped water-methanol injection delivery to your DI (direct fuel injected) and forced induction vehicle

Brand:
SnowPerformance - Corporate Logo
ES#:
3557788
Mfg#:
SN0-320
In Stock at Vendor
$729.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Atmospheric Diverter Valve Spacer - Blue

ES#5457769 - 025254ECS01-04 - Atmospheric Diverter Valve Spacer - Blue - Limited Edition - Individually Numbered - ECS - Audi Volkswagen

Limited Edition - Individually Numbered 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
5457769
Mfg#:
025254ECS01-04
In Stock
Limited Qty Sale
$84.99

This product was last offered at the strikethrough price on
07-02-2026

$65.99 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.

Let us help you find the parts that fit your Audi

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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