Welcome to BEGi™ (Bell Engineering Group, Inc.). For 35 years we have been on the leading edge of the engineering and manufacturing of high performance products. BEGi™ is the oldest Turbo Kit maker in the USA. From our line of rising rate fuel pressure regulators to our industry standard turbocharger and supercharger systems, BEGi™ can give you the performance you're looking for with the engineering expertise you demand. We are the Miata Turbocharging and Supercharging experts.