Early career According to the TPI Specialties' official website, Cottrell was an engine builder for twenty years prior to founding the TPIS.
With TPI Specialties In 1985 Cottrell bought a new
Chevrolet Corvette and was intrigued to learn how its
Tuned Port Injection system worked. After determining that the system could be improved significantly, Cottrell established his company, TPI Specialties, and began building and marketing aftermarket parts kits for
hot rodders. ==Personal life==