Reeves Callaway himself appears in these threads, recounting that the bulk of the GTI Turbosystems kits were built in the garage of his Old Lyme, Connecticut house, shipping about twenty kits a week before the 1982 factory opened. Community consensus: Stage 1 lifted the 90 hp US engine to about 120 hp and Stage 2 to a claimed 186-200 hp, though an experienced owner insists a healthy Stage II dynos around 154 hp. …
Callaway Turbo: the factory-blessed hot rod
Volkswagen GTI (Mk1) · factory-spec