KaiserEngineering LLC is a small team of electrical, software, and mechanical engineers building customizable automotive displays, including a plug-and-play digital dashboard for Ford Focus ST/RS models. Its open-source approach lets drivers tailor gauges and add their own projects, while newer products such as the NA Miata LED tachometer bring modern, configurable instrumentation to classic cars. The Kaiser team works directly with customers and supports its products through documentation and community tools.
IntellitronixFrom its Cleveland-area facility, Intellitronix designs and manufactures electronic gauge panels and embedded systems, with a particular foothold in classic-car dashboards, RV energy management, and racing applications. Founded in 1996 and employee-owned since May 2021 as a worker cooperative, the company handles design, prototyping, and production in-house. Its American-made work also includes custom electronics such as a CANBUS-to-analog interface for classic-car EV conversions.EASTLAKE, OH
CorteX RacingCorteX Racing designs and manufactures automotive aftermarket and motorsports products, especially suspension systems and components for Mustangs and other vintage Ford applications. Its capabilities include in-house engineering, structural testing, fabrication, installation, vehicle builds, and race support, serving street, drag-strip, road-course, and professional and club motorsports markets.LOVELAND, OH
Plugged In PerformanceBorn from a love of dirt bikes and go-karts, Pittsburgh-based Plugged In Performance supplies aftermarket parts and accessories for Tesla vehicles and other electric-vehicle projects. The company is especially focused on helping DIY builders, custom shops, and enthusiasts personalize their cars, with offerings such as Tesla Model 3 aero wheel covers and interior lighting kits. Plugged In Performance supplies the components while customers build and customize the future themselves.PITTSBURGH, PA
EFI ConnectionSince 2003, EFI Connection has built automotive wiring harnesses, connectors and engine-electronics hardware for enthusiasts, with a particular focus on adapting classic GM engines to modern LS-series controls. The company pioneered its crank-and-cam signal solution in 2008, and its EFI 24x and EFI 58x conversion kits now cover more than 50 small-block Chevy, LT1 and big-block configurations. EFI Connection has also been a CNC manufacturer since 2012, producing its offerings in the USA and supporting do-it-yourself builders with the parts and tools needed to complete their wiring projects.ERIE, PA