

We drove a Scion tC with the Turbonetics turbo kit at the Streets of Willow racetrack in California. The Turbonetics kit also includes a cast ductile exhaust manifold, stainless-steel downpipe, aluminum intercooler pipes and everything else you need to boost your tC’s power, from the AEM filter and four drop-in Motron high-flow injectors to the wastegate, blow-off valve and even the TS-1 synthetic engine oil. It’s all controlled by a Unichip computer that piggybacks on the stock computer without screwing up all the normal things the standard ECU must do. The ceramic bearings spool faster and last longer, too.ĭown under the regular tC radiator is where they positioned the Spearco inter-cooler, something that is included in all Turbonetics kits. The lighter turbine of the T3 spools up quickly to lessen turbo lag while the bigger T4 compressor packs in more air. The hybrid consists of a T3 turbine and a T4 compressor. The heart of the system is a Turbonetics T3/T4 hybrid turbocharger, bolted up high, front and center so you will win all those Best Engineered trophies at the import show ‘n’ shine. The whole kit goes for $5,595 at 220 Turbonetics distributors worldwide. The Turbonetics tC kit comes with everything you need to bring a Scion’s horsepower up from a reasonable and prudent 160 stock to an unreasonable and impudent 300 (at the crank on eight pounds of boost with 94 octane gas). So it’s only natural that Turbo-netics should apply its expertise to the tC to make more horsepower. Turbonetics has been fabricating, researching, designing and selling its own turbocharging systems for 28 years, with kits available for 49 vehicles.

Stock out of the box, the Scion tC makes only 160 hp, a specification that is piddly by sport compact tuner/import racer/general poseur standards, but one that is also just waiting for some kind of aftermarket improvement.
