See up to 386 horsepower on 93 octane fuel!
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes! This upgrade must be performed at ECS Tuning's facility in Ohio.
For customers that already have APR software on their car and are upgrading to a K04
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes! This upgrade can be performed via our Chip & Ship method or the vehicle can be brought to ECS Tuning's fa For vehicles with FSI engines only. Ship your ECU for free, or drive your vehicle to our location
Say goodbye to your locked "401" bootloader thanks to Unitronic new TCU Unlock Tools which are seamlessly integrated with the UniCONNECT+ flashing application for end-users.
Standalone tune for Dynamic Idle, Idle RPM change, Left-foot-brake fix, Glow plug duration increase, Hot-start fix, or all the above
Only to be purchased individually. For vehicles from the 2000 model year only.
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
Required software to properly upgrade to a K04 turbocharger
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes! 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
For customers WITH APR Stage 1, moving to the IS38 turbocharger upgrade.
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes! This upgrade must be performed at ECS Tuning's facility in Ohio.
All the performance ECU/TCU upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.
