Stages
A "Tuning Stages Explanation" is not so easy to give. In the tuning industry, the terms Stage 1, Stage 2, Stage 3 etc. are common. They denote the different modifications of the vehicle. The term is used by vehicle tuning companies, manufacturers of tuning accessories, at tuning events and by the tuners themselves.
But what do the different stages mean?
Stage 1, Stage 2, etc. describe different performance levels for rental. But what is behind these power levels?
Stage 1
Stage 1 is the beginning - the first programming stage.
Stage 1 of a new vehicle is usually developed on a performance test bench. Because at this point you don't really know how much the vehicle and the components can withstand. Therefore, the increase in performance occurs only in small steps until the increase in performance and the increased load correspond to the driver's wishes.
While caution is the mother of all performance gains, drivers need not worry too much about tuning. Vehicle manufacturers always build in reserves. Not so that you can tweak it endlessly, but because cars are exposed to different conditions all over the world. They have to deliver their performance under different conditions - regardless of whether the temperature, humidity or fuel vary. Stage 1 therefore only includes the adaptation of the software. The reserves are used to get more power out of the vehicle.
Stage 2
The implementation of Stage 2 usually involves the hardware.
A better and/or larger downpipe (catalyst), a modified intake, a larger charge air cooler, possibly even a simple sports air filter, etc. are all part of Stage 2. Usually only one of the changes mentioned is carried out as Stage 2.
The conversion measures depend on the respective vehicle. Depending on the model, there are components that prevent an increase in power output. Once the hardware has been modified, the corresponding adaptation of the software is essential.
Stage 3
In Stage 3 or higher, however, drivers delve deeper into the subject. What follows now is engine reinforcement in the form of forged pistons and connecting rods, a stronger clutch, a stronger drive train, an adjustment to the crankshaft and much more.
Stage 4 - Individual tuning
Stage 3 is often the end. The next step after that, practically Stage 4, would then be an individual tuning.
If several changes from Stage 2 are implemented together, an individual tuning must be taken to ensure that they harmonize together. Since there are many different HW components from different manufacturers, this can only be done via individual tuning.