Complete Car Care
Where High-Performance Builds and Expert Auto Repair Meet
Since 2013, Speidell Supercars has been Hudson Valley’s trusted shop for performance tuning, high-end repairs, routine maintenance, and NYS inspections. Owner James Speidell—a Ford Senior Master Technician with over 15 years of factory-trained experience—applies precision craftsmanship to every build and repair. From track-ready supercars to reliable daily drivers, we take your vehicle as seriously as you do.
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Dyno Tuning, Remote Tuning, and Performance Upgrades Done Right
Speidell Supercars specializes in dyno and remote tuning via HP Tuners RTD, backed by real data. As an authorized HP Tuners and SCT dealer, they tune everything from a street Mustang GT to a built ZR1 or Z06 Corvette—with factory-trained precision, no guesswork.
Full-Service Auto Repair for All Makes and Models
Beyond performance work, Speidell Supercars handles general auto repair, diesel service, transmission service, brake repair, suspension upgrades, oil changes, and more. The shop services all makes and models, both domestic and foreign, using state-of-the-art equipment and NAPA and OEM parts. New York State vehicle inspections are also available, making Speidell a one-stop shop for Dutchess County drivers.
Services at Speidell Supercars & Auto Repair
Dyno Tuning and Performance Tuning
Speidell Supercars runs precision dyno tuning sessions for high-performance Ford and GM vehicles, delivering measurable horsepower and torque gains. Using HP Tuners and SCT platforms, every calibration is optimized for your specific build, mods, and goals.
Remote Tuning via HP Tuners RTD
Customers who can't make the drive to Poughquag, NY, can still get a professional tune through remote tuning via HP Tuners RTD. The process is detailed, data-driven, and supported by the same factory-trained expertise as an in-shop session.
High-End Vehicle Repair and Diagnostics
From advanced diagnostics to full engine rebuilds, Speidell Supercars handles high-end vehicle repair on Mustangs, Camaros, Corvettes, Shelbys, Jaguars, Audis, BMWs, and more. The shop's clean, modern facility and state-of-the-art equipment ensure every repair is done right the first time.
General Auto Repair and Maintenance
Speidell Supercars provides full-service auto repair for all makes and models, covering oil changes, brakes, tires, suspension, transmission service, diesel repair, and routine maintenance. New York State vehicle inspections are performed on-site as well.
An Authorized Dealer For
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Follow our socials to stay updated on our daily work and current builds! See what’s on the lifts today, catch behind-the-scenes shop updates, and follow our latest custom projects in real time—find us on Instagram, Facebook Tik Tok and YouTube!
