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Audi A3 Performance Engine Parts

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ES#4369226 - 18TSI-IS12-2D-UC - Unitronic Performance Software - Stage 2 - With UniCONNECT+ Cable & DSG Software - 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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#:
4369226
Mfg#:
18TSI-IS12-2D-UC
In Stock
8% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$1599.99

This product was last offered at the strikethrough price on
06-12-2026

$1464.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4369223 - 18TSI-IS12-1+D - Unitronic Performance Software - Stage 1+ - With DSG Software - Gain up to 84 horsepower and 108 lb-ft of torque on 93 Octane - Unitronic - Audi Volkswagen

Gain up to 84 horsepower and 108 lb-ft of torque on 93 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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#:
4369223
Mfg#:
18TSI-IS12-1+D
In Stock
12% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$1300.00

This product was last offered at the strikethrough price on
06-12-2026

$1150.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4369227 - 18TSI-IS20-2D - Unitronic Performance Software - Stage 2 IS20 - With 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
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next
Requires IS20 Turbo Upgrade in addition to other hardware upgrades. Please see description for details.

Brand:
Unitronic - Corporate Logo
ES#:
4369227
Mfg#:
18TSI-IS20-2D
In Stock
10% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$1550.00

This product was last offered at the strikethrough price on
06-12-2026

$1400.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4368658 - 18TSI-IS20-2 - Unitronic Performance Software - Stage 2 IS20 - 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
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next
Requires IS20 Turbo Upgrade in addition to other hardware upgrades. Please see description for details.

Brand:
Unitronic - Corporate Logo
ES#:
4368658
Mfg#:
18TSI-IS20-2
In Stock
$850.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4369221 - 18TSI-IS12-1D - Unitronic Performance Software - Stage 1 - With DSG Software - Gain up to 72 horsepower and 88 lb-ft of torque on 91 Octane - Unitronic - Audi Volkswagen

Gain up to 72 horsepower and 88 lb-ft of torque on 91 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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#:
4369221
Mfg#:
18TSI-IS12-1D
In Stock
12% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$1250.00

This product was last offered at the strikethrough price on
06-12-2026

$1100.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4368662 - 18TSI-IS38-2+-UC - Unitronic Performance Software - Stage 2+ IS38 - With UniCONNECT+ Cable - Gain up to 182 horsepower and 139 lb-ft of torque on 93 Octane - Unitronic - Audi Volkswagen

Gain up to 182 horsepower and 139 lb-ft of torque on 93 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th
Requires Unitronic Stage 2 TCU Performance Software in addition to other hardware upgrades. Please see description for details.

Brand:
Unitronic - Corporate Logo
ES#:
4368662
Mfg#:
18TSI-IS38-2+-UC
In Stock
$1164.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4370467 - 20TSI-GEN3B-1D - Unitronic Performance Software - Stage 1- With 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
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#:
4370467
Mfg#:
20TSI-GEN3B-1D
In Stock
12% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$1250.00

This product was last offered at the strikethrough price on
06-12-2026

$1100.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4381800 - 20TDIMQB - 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
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#:
4381800
Mfg#:
20TDIMQB
In Stock
Starting at $600.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4368651 - 18TSI-IS12-1 - Unitronic Performance Software - Stage 1 - Gain up to 72 horsepower and 88 lb-ft of torque on 91 Octane - Unitronic - Audi Volkswagen

Gain up to 72 horsepower and 88 lb-ft of torque on 91 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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#:
4368651
Mfg#:
18TSI-IS12-1
In Stock
$800.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4369225 - 18TSI-IS12-2D - Unitronic Performance Software - Stage 2 - With DSG Software - 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next
Requires Unitronic 3 Inch Downpipe

Brand:
Unitronic - Corporate Logo
ES#:
4369225
Mfg#:
18TSI-IS12-2D
In Stock
10% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$1450.00

This product was last offered at the strikethrough price on
06-12-2026

$1300.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Based on a BorgWarner K04-064 frame affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This K04 Turbocharger will require diverter valve relocation

Brand:
The Turbo Engineers - Corporate Logo
ES#:
4939916
Mfg#:
SW10016.1
In Stock
$2583.99 USD
ES#4858489 - 034-201-8015 - Oversized, Back Cut Intake Valve - .5mm  - Priced Each - Black Nitride oversize stainless intake valve for all 4v VW/Audi motors including 16v,20v and 32v motors. - 034Motorsport - Audi Volkswagen

Black Nitride oversize stainless intake valve for all 4v VW/Audi motors including 16v,20v and 32v motors. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4858489
Mfg#:
034-201-8015
Ships in 2 Business Days
$43.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4877247 - 034-103-2820 - 8V Audi A3 EA888.3 1.8T Dynamic+ Performance Software Package - Unleash up to 261HP/322TQ by transforming your VW/Audi MQB 1.8T with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! - 034Motorsport - Audi

Unleash up to 261HP/322TQ by transforming your VW/Audi MQB 1.8T with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4877247
Mfg#:
034-103-2820
Ships in 2 Business Days
Starting at $180.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
ES#4858493 - 034-201-8016-1.5 - Oversized Exhaust Valve - 1.5mm - Priced Each - 1.5mm oversze Inconel exhuast valve for all 4v VW/Audi motors including 16v,20v and early 32v motors. - 034Motorsport - Audi Volkswagen

1.5mm oversze Inconel exhuast valve for all 4v VW/Audi motors including 16v,20v and early 32v motors. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4858493
Mfg#:
034-201-8016-1.5
Ships in 2 Business Days
$51.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#264122 - 54-11112 - Pro 5 R Stage 2 Intake System - Add real power that you can feel - AFE - Audi Volkswagen

Add real power that you can feel affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
CARB certified for sale in all 50 states
For vehicles with FSI engines only

Brand:
AFE - Corporate Logo
ES#:
264122
Mfg#:
54-11112
EO#:
D-550-30
In Stock at Vendor
20% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$483.75

This product was last offered at the strikethrough price on
01-28-2026

$387.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#5395997 - 52-10020R - Rapid Induction Cold Air Intake System W/ Pro 5R Filter - Boost airflow and horsepower with the aFe POWER Pro 5R intake systemfeaturing a 7" pre-oiled five-layer cotton gauze filter, 3" mandrel-bent aluminum intake tube, and top-mounted heat shield for street and track-ready performance. - AFE - Audi Volkswagen

Boost airflow and horsepower with the aFe POWER Pro 5R intake system—featuring a 7" pre-oiled five-layer cotton gauze filter, 3" mandrel-bent aluminum intake tube, and top-mounted heat shield for street and track-ready performance. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AFE - Corporate Logo
ES#:
5395997
Mfg#:
52-10020R
Ships in 3 Business Days
20% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$436.99

This product was last offered at the strikethrough price on
02-17-2026

$349.00 USD
Free Shipping

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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