S-TEC Chiptuning Software Service for Professional Tuning Shops. You are currently in the dealer section of S-TEC Fahrzeugtechnik. This page is intended for workshops and tuning shops. On this page, we offer our file service for chiptuning software! We offer: - Top quality, backed by years of experience (since 1998) - Professional chiptuning equipment (flash tools) - Tested software solutions (chiptuning files) - Technical support and up-to-date information - Engine warranty in conjunction with our software