David Blythe – CPEng, RPEQ. David works in his business, DB Autotoech, as an independent vehicle compliance engineer. DB Autotech specialises in state and federal approvals for manufacturers of aftermarket vehicle build kits, components and Second Stage Manufacture builds. DB Autotech has been a light and heavy vehicle engineering consultancy since 2008. Previous to this David was employed in the OEM automotive industry since 1997 for Holden, Ford, Roush UK and Bosch as a powertrain test and development engineer – specialising in the area of future model vehicle engine management system calibration.