About

About Wehrli Custom Fabrication / Calibrated Power Wehrli Custom Fabrication (WCFab) is a family-owned and operated business specializing in performance upgrades for the diesel pickup market. Based in DeKalb, Illinois, the company focuses on U.S.-made manufacturing with custom metal fabrication, precision CNC machining, and custom powder coat finishing. Calibrated Power is a leader in the diesel aftermarket industry. The Woodstock, Illinois–based company delivers custom, high-quality performance engine calibrations and turbocharger upgrades.