Custom Performance Tuning was born from a merger of ideas and resources between SD Racing and Custom Performance Engineering. Both companies pooled their decades of performance knowledge together to create Custom Performance Tuning

HP Tuners

HP Tuners is the premier tuning and diagnostics solution for vehicle aftermarket performance with over 20 years of expertise.

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Diablosport

DiabloSport offers a variety of tuning products designed to deliver more power, improved drivability, better towing, and improved efficiency. We’ve built a focus for specific models to use DiabloSport devices because they each feature wide application coverage including the popular domestic trucks and muscle cars. Whether your goal is towing your boat to the lake, tackling the toughest off-road trails, or beating your best time down the track, DiabloSport has a tuning solution for you

Tune on Diablosport

SCT

SCT offers a variety of tuning products designed to deliver more power, improved drivability, better towing, and improved efficiency. We’ve built a focus for specific models to use SCT devices because they each feature wide application coverage including the popular domestic trucks and muscle cars. Whether your goal is towing your boat to the lake, tackling the toughest off-road trails, or beating your best time down the track, SCT has a tuning solution for you

Tune on SCT