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Professional tuning services for BMW B58, S58 and S63 engines

BMW tuning done better
Whether you want lower Dragy times or a reliable OEM+ tune, JMT Calibration has your back
Competitive pricing
No overcharging for small adjustments or revisions to your car within reason. Sale prices on the new shop means you get the best priced tuner with deep knowledge of the DME.
No queues
No queues. Client numbers are limited meaning you will get enough time devoted to your car and getting it dialed-in.
More than pops and bangs
A tune from JMT Calibrations gets you access to detailed knowledge to solve your tuning problems. Do more than raise limits. Care more about the way your car drives.
Support for modern BMW setups
B58, S58 and S63 engines, standard or ethanol-based fueling, upgraded turbos, upgraded DI or PI. JMT Calibration is active in the BMW community and has been pushing the standard of B58 tuning for over two years.
A drive for perfection
JMT Calibration is part of wider push to raise the level of tuning for BMW owners that includes five years of community engagement and the b58.wiki.
“Man, your tune is just better! The car drives great and the logs are less wavy.”

Mike
B58TU customer