MS43/MS42 TUNED ECU
Only for MS43/MS42 years 1999-2003
You may ship us your stock ECU to be tuned and shipped back, or you may purchase a fresh ECU for $50 more to have tuned and shipped to you.
Swipe through the photos to see each Stage's features and requirements.
Customization is available once added to the cart.
Compatible models:
E46 320, 323, 325, 328, 330
Z3 2.3, 2.5, 2.8, 3.0
E39 523, 525, 528, 530
E53(x5) 3.0
Only for MS43/MS42 years 1999-2003
You may ship us your stock ECU to be tuned and shipped back, or you may purchase a fresh ECU for $50 more to have tuned and shipped to you.
Swipe through the photos to see each Stage's features and requirements.
Customization is available once added to the cart.
Compatible models:
E46 320, 323, 325, 328, 330
Z3 2.3, 2.5, 2.8, 3.0
E39 523, 525, 528, 530
E53(x5) 3.0
Only for MS43/MS42 years 1999-2003
You may ship us your stock ECU to be tuned and shipped back, or you may purchase a fresh ECU for $50 more to have tuned and shipped to you.
Swipe through the photos to see each Stage's features and requirements.
Customization is available once added to the cart.
Compatible models:
E46 320, 323, 325, 328, 330
Z3 2.3, 2.5, 2.8, 3.0
E39 523, 525, 528, 530
E53(x5) 3.0
***6cyl vehicles only***
All ECUS come EWS deleted and are completely plug and play.
All stages offer an increase in horsepower and torque.
Stage 3 offers around 15-18whp over stock proven on a dyno for both 2.5 and 3.0 models with supporting mods.
Disconnecting the battery for 2 hours is recommended before installation
Rear O2 and SAP Bypasses, are not intended to pass emissions. The intended purpose is to notify the ECU of no longer installed hardware which simultaneously removes the check engine light as the ECU is now aware of the hardware changes. In some cases, this can ready monitors, but understand, this is for offroad and/or competition use only. Please abide by your applicable laws. Read our Terms & Conditions for more information.
FOR OFF-ROAD USE ONLY
For cars years 03-06 (ms45.x)
To get an ms45.x tune, you can be located in GA, or receive a remote tune if you have access to an INPA cable and windows laptop. To purchase or for more information, please contact us via email or social media, or visit the remote tune product page below.
Remote tuning services for vehicles from 2003-2006 (ms45.x Only) . A windows laptop and INPA compatible USB to OBD2 cable are required. A remote tune includes a scheduled appointment for remote access, to have the car tuned.
compatible models:
e46 325, 330 (i/ci/xi)
z4 2.5i, 3.0i
X5 3.0i
e39 525i, 530i
e60 530i (m54)