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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
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next
-
- ES#:
- 4464243
- Mfg#:
- 1.8T-B5-B6
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Unitronic Performance Software - Flashed @ ECS
Starting at: $350.00
SALE:
350.00
Starting at: $350.00
WAS:
$500.00
on 06-22-2026
This product was last offered at the strikethrough price on
06-22-2026
Sale
Save 30%
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This product is backed by our
Lifetime Replacement Program! Read more here
Lifetime Replacement Program! Read more here
Selected Options
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Unitronic Performance Software - Stage 1
Gain up to 45 horsepower and 64 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!
4461243
1.8T-MK4B5-1
Sale
SAVE 30%
$500.00
This product was last offered at the strikethrough price on
06-22-2026
350.00
Unitronic Performance Software - Stage 1+
Gain up to 51 horsepower and 87 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!
Upgraded (DV) Diverter Valve recommended
Upgraded (DV) Diverter Valve recommended
4461244
1.8T-MK4B5-1+
Sale
SAVE 27%
$550.00
This product was last offered at the strikethrough price on
06-22-2026
400.00
Unitronic Performance Software - Stage 2
Gain up to 62 horsepower and 102 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!
Requires Upgraded Downpipe
Requires Upgraded Downpipe
4461245
1.8T-MK4B5-2
Sale
SAVE 25%
$600.00
This product was last offered at the strikethrough price on
06-22-2026
450.00
Unitronic Performance Software - Stage 2+
Gain up to 115 horsepower and 145 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!
Requires K04 Turbo in addition to other hardware upgrades. Please see description for details.
Requires K04 Turbo in addition to other hardware upgrades. Please see description for details.
4461246
1.8T-MK4B5-2+
Sale
SAVE 17%
$890.00
This product was last offered at the strikethrough price on
06-22-2026
740.00
Select 1 of the options below
Special Care - VIN Confirmation
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
4376649
SPECIALCAREVIN
0.00
Included With Purchase
Product Details
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
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next
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
- Lower End Hesitation (Lag) Removed
- Optimized for an Upgraded (DV) Diverter Valve
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+ Adds:
- Optimized for K04 and supporting mods
Required Hardware for Stage 1+:
- Upgraded (DV) Diverter Valve recommended
Required Hardware for Stage 2:
- Upgraded Downpipe
- Audi TT 225HP Fuel Injectors.
- Cold Air Intake or Short Ram recommended
- Upgraded (DV) Diverter Valve recommended
- Upgraded Intercooler recommended
Required Hardware for Stage 2+:
- Audi TT 225HP Fuel Injectors
- K04-015 Turbo
- Upgraded Downpipe
- Cold Air Intake / Short Ram
- Upgraded Diverter Valve recommended
- Upgraded Intercooler recommended
*Please note, power figures may vary depending on specific years and models.
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 | B5 A4 | FWD | 1.8T | Use vehicle selector to confirm fitment |
| Audi | B5 A4 | Quattro | 1.8T | Use vehicle selector to confirm fitment |
| Audi | B6 A4 | FWD | 1.8T | Use vehicle selector to confirm fitment |
| Audi | B6 A4 | Quattro | 1.8T | Use vehicle selector to confirm fitment |
| Volkswagen | Passat B5 | 4 Motion | 1.8T | Use vehicle selector to confirm fitment |
| Volkswagen | Passat B5 | FWD | 1.8T | Use vehicle selector to confirm fitment |
This Product Is Covered By Our Lifetime Replacement Program
Some PDK components are covered by our Lifetime Replacement Program
This product is not eligible for Lifetime Replacement
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