BMW engine tuning
BMW S68 tuning & performance modules.
Browse STEINBAUER applications for BMW S68 engines. Find the correct application by machine or vehicle, engine specification, factory power output and STEINBAUER part number.
Engine family
One engine family. Many different applications.
BMW S68 4.4-litre twin-turbo petrol engines are used in high-performance BMW applications including X7 and XM variants. STEINBAUER therefore matches the module to the exact machine or vehicle and engine application rather than treating every engine in the family as identical.
Compatible applications
Find your BMW S68 application.
Select the exact model and engine specification below. Each result links to its dedicated STEINBAUER application page with power, torque, part number and ordering details.
STEINBAUER technology
Additional usable power without permanently rewriting the ECU.
STEINBAUER works alongside the original engine management system. The module uses application-specific injection-duration optimisation while leaving the original ECU software in place.
- No permanent ECU remap
- No common-rail pressure increase
- No change to injection timing
- Factory ECU safety strategies remain active
- Removable hardware solution
- UK installation and technical support
Questions about BMW S68 tuning
Frequently asked questions.
Can a BMW S68 engine be tuned with STEINBAUER?
Yes, where a matching STEINBAUER application has been developed for the exact machine, engine management system and factory power level. Use the application list on this page to identify a compatible application.
Is every BMW S68 engine the same?
No. Engines within the same family can exist in different generations, emissions stages, injection systems and factory power ratings. The correct STEINBAUER part number depends on the exact application.
How much extra power is available on a BMW S68?
The increase depends on the exact application. STEINBAUER calibrations are developed for the individual engine, vehicle or machine and published performance data should always be checked on the exact application page.
Does STEINBAUER remap the original ECU?
No. The STEINBAUER module works alongside the factory engine management system without permanently rewriting the original ECU software.
Does STEINBAUER increase common-rail pressure?
No. STEINBAUER performance is achieved through application-specific injection-duration optimisation rather than increasing common-rail pressure.
Can the STEINBAUER module be removed?
Yes. The module is a removable hardware solution. Installation method varies by application, and registered customers and dealers can access available installation guides and videos.