These stage 2 mods offer larger power gains than stage one but will usually require additional work or other parts if you want them to work reliably. Stage 2 mods consists of a larger turbo install, ECU Remap, supercharger kits.
Turbo: You increase airflow by getting more boost pressure into your engine – this is usually done with a bigger turbo. You increase efficiency by making your turbo “better at spooling” – this will usually be done with a higher-quality turbo, or one that is better-suited to your engine than the factory unit.
ECU Remap: A vehicle remap replaces default software on the ECU, overwriting it with new software which can be programmed to optimize the cars overall performance. This is known as vehicle remapping because the ECU is essentially a program that controls how the engine works.
Superchargers kits: A supercharger is an air compressor that increases the pressure or density of air supplied to an internal combustion engine. This gives each intake cycle of the engine more oxygen, letting it burn more fuel and do more work, thus increasing power.
Car Modifications 