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Turbo engines under two litres: 1.0 T-GDi, 1.2 TSI, 1.4 TSI, 1.5 i-VTEC turbo and 1.5 EcoBoost.
Turbo-Four is the engine club for the small-displacement turbo cars that now carry most of the performance market: Stage 1 results by engine, heat soak, spark plug and coil choices, intake and intercooler experiments and shared dyno data. A small turbo is still the cheapest route to a quick car, and what limits it is fuelling and heat rather than the badge on the bonnet.
For verified owners of any turbocharged four-cylinder car under 2.0 litres.
What happens here: engine-platform deep dives (oil, coolant, carbon, turbo and gasket behaviour in heat), dyno days and tuner comparisons, club drives that mix badges around one engine, a parts cross-reference maintained by members, and shared long-term reliability logs.
No members yet. Applications are open.
Free on every membership. You apply with the car in your garage and a reviewer decides, usually within 48 hours.
Checked by hand. Documents are only seen by the reviewers, through links that expire in 15 minutes.
No approved members yet. The first application could be yours.