A stage 3 tune is considered by most to be a level thatâs best invested in for track or drag racing. Thatâs because it can be very expensive. It usually involves upgrading cooling, fueling, spark plugs, inlet valves, intake and more in addition to all stage 2 modifications.
This stage will require a car to be set up on a rolling road or dyno to optimize the fuel and timing and correct exhaust emissions.
It is also at this stage that the stock turbo on a car needs to be upgraded, although this is recommended as the final modification to complete vehicle tuning.