Eliminate the delay in throttle response times with a simple XLR addition! Allows for Bluetooth connectivity for easy App based control. *Open Box - New Product*
Brand:
ES#:
4708645
Mfg#:
999951
In Stock
ON SALE!
SAVE 16%
$299.00
This product was last offered at the strikethrough price on 07-28-2026
See up to 386 horsepower on 93 octane fuel!
Call In Or Chat For Best Price! 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! 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! 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
Required software to properly upgrade to a K04 turbocharger
Call In Or Chat For Best Price! This upgrade must be performed at ECS Tuning's facility in Ohio. For vehicles with TSI engines only. Ship your ECU for free, or drive your vehicle to our location
Brand:
ES#:
2776628
Mfg#:
PA100007
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! 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.
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.
Add power and performance with special ECU software upgrades from recognized tuning leaders like APR, 034Motorsport, Unitronic, Integrated Engineering. Let our trained support staff show you how to pick the performance ECU software upgrade that suits your driving preferences and budget.
