How to Get More Power for an Audi TT

1. Improve the flow of combusted air out of the engine and increase the TT engine's capacity for horsepower by installing an upgraded exhaust system. Beginning at the exhaust manifold, the exhaust system collects the combusted gases from all of the engine's cylinders and pushes them out of the engine so that additional air and fuel can be taken into the engine and combusted to produce power. Installing an exhaust system that has pipes with a larger diameter compared to the factory exhaust system will allow your engine to combust at a faster rate since it will not be holding the combusted gases in each cylinder chamber for as long as it would when using the factory exhaust system.
2. Install a cold air intake on your TT to improve the engine's efficiency and increase the rate at which new air is taken into the engine for combustion. From the factory, the Audi TT has a plastic air box with a built-in air filter to draw fresh air into the engine. By replacing the factory air box with a less restrictive and open cold air intake and air filter, you will be improving the flow of new air into the engine, essentially helping the engine breathe faster. Purchase a cold air intake which positions the air filter below the engine so that it is taking in colder air opposed to the hot air found in the engine bay, which is an ambient byproduct of the engine's operation.
3. Combine the upgraded intake and exhaust systems with a upgraded Engine Control Unit, or ECU, to further increase engine power. With the addition of a larger exhaust system and more efficient intake system, the engine's factory ECU will constantly be adapting to the new air-to-fuel ratios. The factory ECU is engineered to work in tandem with the factory equipment. Installing an upgraded ECU can help facilitate the engine's electronic processing of the air-to-fuel ratios. An ECU upgrade does not have to be coupled with an intake and exhaust system, however. On its own, an ECU upgrade can produce more power by modifying the operating parameters of the factory equipment.