Your Vehicle Audi B9 A4 Quattro 2.0T

Change Clear

The above image is for illustrative purposes only.
Select options below.

Unitronic Performance Software - Flashed @ ECS

Choose the stage that meets your power goals!

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 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

ES#:: 4461126
Mfg#:: 20FSI-TTS

Select Your Vehicle

Add to Wish List

Unitronic Performance Software - Flashed @ ECS

Starting at: $400.00

SALE: 400.00

Starting at: $400.00

WAS: $550.00 on 06-22-2026

This product was last offered at the strikethrough price on
06-22-2026

Sale Save 27%

Selected Options

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Qty

Add to Wish List

ECS Images
Upload

‹ ›

Select Options

all options

Select 1 of the options below

Unitronic Performance Software - Stage 1

Gain up to 39 horsepower and 57 lb-ft of torque on 91 Octane

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!

4461111 20FSI-RTTS-1

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 27% $550.00

This product was last offered at the strikethrough price on
06-22-2026

400.00

Unitronic Performance Software - Stage 1 - With DSG Software

Gain up to 39 horsepower and 57 lb-ft of torque on 91 Octane

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!

4461119 20FSI-RTTS-1-D

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 17% $900.00

This product was last offered at the strikethrough price on
06-22-2026

750.00

Unitronic Performance Software - Stage 1+

Gain up to 49 horsepower and 67 lb-ft of torque on 93 Octane

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!

4461112 20FSI-RTTS-1+

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 25% $600.00

This product was last offered at the strikethrough price on
06-22-2026

450.00

Unitronic Performance Software - Stage 1+ - With DSG Software

Gain up to 49 horsepower and 67 lb-ft of torque on 93 Octane

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!

4461120 20FSI-RTTS-1+-D

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 16% $950.00

This product was last offered at the strikethrough price on
06-22-2026

800.00

Unitronic Performance Software - Stage 2

Gain up to 79 horsepower and 97 lb-ft of torque on 93 Octane

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!

4461113 20FSI-RTTS-2

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 23% $650.00

This product was last offered at the strikethrough price on
06-22-2026

500.00

Unitronic Performance Software - Stage 2 - With DSG Software

Gain up to 79 horsepower and 97 lb-ft of torque on 93 Octane

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!

4461121 20FSI-RTTS-2-D

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 14% $1100.00

This product was last offered at the strikethrough price on
06-22-2026

950.00

Unitronic Performance Software - Stage 2 HPFP

Gain up to 89 horsepower and 107 lb-ft of torque on 93 Octane

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!

4461114 20FSI-RTTS-2H

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 22% $675.00

This product was last offered at the strikethrough price on
06-22-2026

525.00

Unitronic Performance Software - Stage 2 HPFP - With DSG Software

Gain up to 89 horsepower and 107 lb-ft of torque on 93 Octane

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!

4461122 20FSI-RTTS-2H-D

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 13% $1125.00

This product was last offered at the strikethrough price on
06-22-2026

975.00

Unitronic Performance Software - Stage 3 BT

Gain up to 230 horsepower depending on modifications

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!

4461115 20FSI-RTTS-3

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 16% $950.00

This product was last offered at the strikethrough price on
06-22-2026

800.00

Unitronic Performance Software - Stage 3 BT - With DSG Software

Gain up to 230 horsepower depending on modifications

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!

4461123 20FSI-RTTS-3-D

Availability:

In Stock

Est. Ship Date:

in 1 Business Day

Lifetime Replacement

Sale

SAVE 11% $1400.00

This product was last offered at the strikethrough price on
06-22-2026

1250.00

Select 1 of the options below

Special Care - VIN Confirmation

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

4376649 SPECIALCAREVIN

Availability:

In Stock

Est. Ship Date:

Today

Lifetime Replacement

0.00

Included With Purchase

Product Details

Features:

Engineered with Strict Industry Standards
Extensively Tested Under Various Driving Conditions
Factory Safety Limiters Retained
Optimized Responsiveness and Drivability
Optimized Smoothness and Driving Comfort
Power Delivery Perfectly Optimized Throughout the Power Band
Improved Fuel Efficiency
Speed Governor Removed
RPM Limiter Increased to 7100
Lower End Hesitation (Lag) Removed

Stage 1+ Adds:

Ignition Timing Precisely Calibrated for Higher Octane Fuel

Stage 2 Adds:

Precisely Calibrated for an Upgraded Exhaust System (Go Green - Use a Catalytic Converter)
Optimized for a High Flow Catalytic Converter

Stage 2 HPFP Adds:

Optimized for a Upgraded High Pressure Fuel Pump

Required Hardware For Stage 2:

Upgraded Downpipe

Required Hardware For Stage 2 HPFP:

Upgraded High Pressure Fuel Pump
Upgraded Downpipe
Cold Air Intake / Short Ram

Required Hardware For Stage 3 BT:

RS4 Injectors
Upgraded High Pressure Fuel Pump
Upgraded Downpipe
Upgraded Intercooler
Electronic Boost Controller (EBC)

Stage 1 DSG Software Features:

Optimized "D" & "Sport Mode"
RPM Limiter Increased to 6700
Launch Control Increased to 3400

Stage 2 DSG Software Features:

Optimized "D" & "Sport Mode"
RPM Limiter Increased to 7000
Launch Control Increased to 4000
Automatic Downshifting upon deceleration
Kick Downs Removed
Includes all Stage 2 tune variants and all lower software stages

Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.

This Part Fits the Following Vehicles

Make	Model	Submodel	Engine	Special Fitment Notes
Audi	TTS	MK2 (2006-2013)	2.0T	Use vehicle selector to confirm fitment

*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.