The Subaru Impreza WRX 2 litre turbocharged engine with a half meter long exhaust sounded just as good as we thought it would. And yes, it was loud.
The engine sputtered slightly. Probably because we didn't have the exhaust gaskets so the ECU tried to correct the mixture with wrong information coming from the lambda. But the engine is installed and works. There's still loads of bits and pieces to do, but after this it doesn't feel that bad.
Link to the Youtube video: Race Taxi Startup