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Audi A3 Performance TCU Software / Tuning

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ES#4369228 - 18TSI-IS20-2D-UC - Unitronic Performance Software - Stage 2 IS20 - With UniCONNECT+ Cable & DSG Software - Gain up to 131 horsepower and 125 lb-ft of torque on 93 Octane - Unitronic - Audi Volkswagen

Gain up to 131 horsepower and 125 lb-ft of torque on 93 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 5/22/26 - 6/5/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th
Requires IS20 Turbo Upgrade in addition to other hardware upgrades. Please see description for details.

Brand:
Unitronic - Corporate Logo
ES#:
4369228
Mfg#:
18TSI-IS20-2D-UC
In Stock
ON SALE! SAVE 10%
$1564.99

This product was last offered at the strikethrough price on
05-21-2026

$1414.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4056819 - iesovn41dsg - Stage 1 IE Performance ECU Tune - Includes DSG Tune & POWERlink Cable - Average gain of 68 horsepower and 111 lb-ft of torque - Integrated Engineering - Audi Volkswagen

Average gain of 68 horsepower and 111 lb-ft of torque affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.

Brand:
Integrated Engineering - Corporate Logo
ES#:
4056819
Mfg#:
IESOVN41DSG
In Stock
$1327.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4877103 - 034-103-274A - 8P Audi A3 / 8U Q3 / TT MKII 2.0T TSI Gen 1 Dynamic+ Performance Software Package - Unleash up to 264HP/304TQ by transforming your VW/Audi EA888.1 with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! - 034Motorsport - Audi

Unleash up to 264HP/304TQ by transforming your VW/Audi EA888.1 with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with Gen 1 TSI engine only

Brand:
034Motorsport - Corporate Logo
ES#:
4877103
Mfg#:
034-103-274A
Ships in 1 Business Day
Starting at $180.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
ES#4370470 - 20TSI-GEN3B-1+DU - Unitronic Performance Software - Stage 1+ - With UniCONNECT+ Cable & DSG Software - Gain up to 65 horsepower and 83 lb-ft of torque on 93 Octane - Unitronic - Audi

Gain up to 65 horsepower and 83 lb-ft of torque on 93 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 5/22/26 - 6/5/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th

Brand:
Unitronic - Corporate Logo
ES#:
4370470
Mfg#:
20TSI-GEN3B-1+DU
In Stock
ON SALE! SAVE 11%
$1314.99

This product was last offered at the strikethrough price on
05-21-2026

$1164.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4370468 - 20TSI-GEN3B-1D-U - Unitronic Performance Software - Stage 1 - With UniCONNECT+ Cable & DSG Software - Gain up to 43 horsepower and 69 lb-ft of torque on 91 Octane - Unitronic - Audi

Gain up to 43 horsepower and 69 lb-ft of torque on 91 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 5/22/26 - 6/5/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th

Brand:
Unitronic - Corporate Logo
ES#:
4370468
Mfg#:
20TSI-GEN3B-1D-U
In Stock
ON SALE! SAVE 12%
$1264.99

This product was last offered at the strikethrough price on
05-21-2026

$1114.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#5457564 - IESOVN15 - IE Pro ECU Tune With POWERlink Cable - The enthusiasts choice that unlocks Stage 2 potential, requiring bolt-on hardware like a downpipe to maximize the stock IS20 turbo. - Integrated Engineering - Audi Volkswagen

The enthusiast’s choice that unlocks Stage 2 potential, requiring bolt-on hardware like a downpipe to maximize the stock IS20 turbo. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
5457564
Mfg#:
IESOVN15
In Stock
Starting at $179.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4877142 - 034-103-273A - 8P Audi A3 / TT MK2 2.0T FSI EA113 Dynamic+ Performance Software Package - Unleash up to 309HP/313TQ by transforming your VW/Audi EA113 FSI with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! - 034Motorsport - Audi

Unleash up to 309HP/313TQ by transforming your VW/Audi EA113 FSI with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with FSI engine only

Brand:
034Motorsport - Corporate Logo
ES#:
4877142
Mfg#:
034-103-273A
Ships in 1 Business Day
Starting at $180.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
ES#4389475 - 20TSI-IS20 - Unitronic Performance Software - Flashed @ ECS - Choose the stage that meets your power goals! - Unitronic - Audi Volkswagen

Choose the stage that meets your power goals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 5/22/26 - 6/5/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next

Brand:
Unitronic - Corporate Logo
ES#:
4389475
Mfg#:
20TSI-IS20
In Stock
ON SALE!
Starting at $550.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4381803 - 20TDIMQB-UC - Unitronic Performance Software - With UniCONNECT+ Cable - Choose the stage that meets your power goals! - Unitronic - Audi Volkswagen

Choose the stage that meets your power goals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 5/22/26 - 6/5/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!

Brand:
Unitronic - Corporate Logo
ES#:
4381803
Mfg#:
20TDIMQB-UC
In Stock
ON SALE!
Starting at $614.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4465344 - 2.0-TDI-UC - Unitronic Performance Software - With UniCONNECT+ Cable - Choose the stage that meets your power goals! - Unitronic - Audi Volkswagen

Choose the stage that meets your power goals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 5/22/26 - 6/5/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th
For vehicles with CBEA or CJAA engine code only. Vehicles with DSG require DSG tune.

Brand:
Unitronic - Corporate Logo
ES#:
4465344
Mfg#:
2.0-TDI-UC
In Stock
ON SALE!
Starting at $564.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Optimized clutch pressure and proactive torque transfer for improved traction and acceleration. Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
APR - Corporate Logo
ES#:
5456929
Mfg#:
SW300001-01
Ships on Jun 29, 2026
$449.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4465338 - 2.0-TDI - Unitronic Performance Software - Flashed @ ECS - Choose the stage that meets your power goals! - Unitronic - Audi Volkswagen

Choose the stage that meets your power goals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 5/22/26 - 6/5/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next
For vehicles with CAEB or CJAA engine code only. Vehicles with DSG require DSG tune.

Brand:
Unitronic - Corporate Logo
ES#:
4465338
Mfg#:
2.0-TDI
In Stock
ON SALE!
Starting at $400.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4617327 - 20TSI - Unitronic Performance Software - Flashed @ ECS - Choose the stage that meets your power goals! - Unitronic - Audi Volkswagen

Choose the stage that meets your power goals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 5/22/26 - 6/5/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next
For vehicles with TSI engines only

Brand:
Unitronic - Corporate Logo
ES#:
4617327
Mfg#:
20TSI
In Stock
ON SALE!
Starting at $400.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4381814 - 20FSI - Unitronic Performance Software - Flashed @ ECS - Choose the stage that meets your power goals! - Unitronic - Audi Volkswagen

Choose the stage that meets your power goals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 5/22/26 - 6/5/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next
For vehicles with FSI engines only.

Brand:
Unitronic - Corporate Logo
ES#:
4381814
Mfg#:
20FSI
In Stock
ON SALE!
Starting at $400.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Offers smoother and quicker shifts and a higher torque limit thanks to increased clamping pressure affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This upgrade requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next business day.

Brand:
Tunezilla - Corporate Logo
ES#:
4349038
Mfg#:
DG250-DSG-TUNE
Ships in 7 Business Days
$399.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4338809 - iesovn43dsg - IS20 Turbo IE Performance ECU Tune - Includes DSG Tune & POWERlink Cable - Average gain of 161 horsepower and 201 lb-ft of torque on 91 Octane - Integrated Engineering - Audi Volkswagen

Average gain of 161 horsepower and 201 lb-ft of torque on 91 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.

Brand:
Integrated Engineering - Corporate Logo
ES#:
4338809
Mfg#:
IESOVN43DSG
In Stock
$1627.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance TCU Software / Tuning

Add power and performance with special TCU software upgrades from recognized tuning leaders like APR, 034Motorsport, Unitronic, and Integrated Engineering. Let our trained support staff show you how to pick the performance ECU software upgrade that suits your driving preferences and budget.

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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