Get up to +29 hp and +42 lb-ft through a safe and easy to use tuning module from RaceChip
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Get up to +49 hp and +50 lb-ft through a safe and easy to use tuning module from RaceChip
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Get up to +34 hp and +41 lb-ft through a safe and easy to use tuning module from Racechip
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For vehicles with TSI engines up through the 2010 model year only.
Get up to +37 hp and +45 lb-ft through a safe and easy to use tuning module from RaceChip
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Get up to +25 hp and +45 lb-ft through a safe and easy to use tuning module from RaceChip
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Get up to +50 hp and +49 lb-ft through a safe and easy to use tuning module from RaceChip
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For vehicles with FSI engines only.
See up to 386 horsepower on 93 octane fuel!
Call In Or Chat For Best Price! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply This upgrade must be performed at ECS Tuning's facility in Ohio. For existing Stage 1 or Stage 2 customers with Golf R/8V S3 IS38 turbocharger only. Tuning may only be performed in-house at APR dealers.
Brand:
ES#:
2996318
Mfg#:
STGIS38UPG
In Stock
ON SALE!
SAVE 20%
$299.99
This product was last offered at the strikethrough price on 09-28-2026
For customers that already have APR software on their car and are upgrading to a K04
Call In Or Chat For Best Price! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply This upgrade can be performed via our Chip & Ship method or the vehicle can be brought to ECS Tuning's fa Ship your ECU for free, or drive your vehicle to our location
Brand:
ES#:
3509833
Mfg#:
PA100008KT
Back Ordered
ON SALE!
SAVE 20%
$299.99
This product was last offered at the strikethrough price on 09-28-2026
Upgrades existing APR Stage I software to Stage II Supercharger Pulley upgrade software
Call In Or Chat For Best Price! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For use with the APR Supercharger Pulley Upgrades - Existing APR Stage 1 software must be present for thi
Brand:
ES#:
3219307
Mfg#:
30TFSIUPGRADEKT
In Stock
ON SALE!
SAVE 20%
$249.99
This product was last offered at the strikethrough price on 09-28-2026
For customers WITH APR Stage 1, moving to the IS38 turbocharger upgrade.
Call In Or Chat For Best Price! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply This upgrade must be performed at ECS Tuning's facility in Ohio.
Brand:
ES#:
3411787
Mfg#:
18TIS38KT
In Stock
ON SALE!
SAVE 20%
$249.99
This product was last offered at the strikethrough price on 09-28-2026
Audi left performance on the table. iE sets it free by safely reprogramming your engine computer to unleash heavy-hitting acceleration, sharper response, and a completely new personality... all backed by AutoProtect.
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Gains of up to 122hp and 142tq depending on fuel type.
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
The ultimate "no-limits" tier that provides access to every stage and map, including Stage 3 big turbo files for maximum horsepower.
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Stage 1 ECU tune designed for factory hardware on pump gas to deliver thrilling, track-ready performance for Audi B9 and B9.5 RS4 and RS5 models directly from your smartphone.
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Gains of up to 53hp and 80tq on 91 Octane.
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For vehicles with FSI engines only.
Gains of up to 55hp and 61tq depending on fuel type.
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
If you've upgraded your car or just want a bit more power from your stock vehicle, performance engine software helps maximize your car's potential by letting it know just where the limits are. Improve your driving experience with upgraded performance engine software from our selection of elite software tuners.
Lifetime Replacement
