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Bell Tuning & Performance

About Us

Welcome to Bell Tuning & Performance!

Bell Tuning & Performance is one of the two companies formed by Stephanie Bell-Turner in 2017 when BEGI/ Bell Engineering closed. We are still located in the Texas Hill Country north of San Antonio, TX! She was with BEGi for over 17 years and was very fortunate to learn the Miata and tuning from some of the best in the industry. She has traveled all over the U.S.A. and Australia tuning Miata’s. She is also one of the top Xede Engine Management tuners in the world. Stephanie is currently on her fourth Miata. All of her Miata’s have been test cars for new parts. She has tested, driven, and lived with all the new parts prior to their release.


The Bell Tuning & Performance website is now accepting online orders! The new website is fully updated and has several shipping options soon to include International shipping. If you have any questions please do not hesitate to call or email us!


BTP provides the best products for your Miata! We can help you replace OEM parts or make it go faster with a turbo kit. We have thousands of parts for your Mazda. If we do not have the part listed on the website, please do not hesitate to contact us to see if we can source it for you.