Brands & Partnerships
Trusted by the Best in the Industry
At Ultimate PSI, quality starts with who we work with. We partner with leading manufacturers and suppliers to bring our customers components and tuning solutions that meet real motorsport standards — not just aftermarket promises.
Our Partners Include:
ACL Race — High-performance engine bearings engineered for extreme loads, built for racing and high-output street applications.
bootmod3 — Advanced ECU tuning platform for BMW, delivering flash tuning, data logging, and performance calibration.
XHP — BMW-specific transmission tuning software, used for custom shift mapping and transmission performance optimization.
