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Multimap Switching 2.0TFSi, 20VT, 2.7T & R32

MapSwitching is an innovative feature found in our ECU programs, which is available for VAG 20vt, 2.0TFSi, 2.7T & R32 andsoon for VAG 1.4TSi/TFSi & 1.8TSi/TFSi. With this feature, user has the capability to change ECU programs using Cruise Control or a combination of brake and acceleration pedals!

*Using the Cruise Control:
The Cruise control switch acts as MapSwitching when car is moving with a speed of less than 10km/h and rpm is less than 1500. In any other case, meaning that the car is moving faster than 10km/h and the engine revs more than 1500rpm, cruise control swith functions as Cruise Control.

*Using acceleration + brake pedals:
Changing ECU programs is done with a combination of acceleration and brake pedals. This system is suggested to cars that are not equipped with Cruise Control.

The EPC light or the rev counter show us the map that we are using, eg:
-1000rpm->map1
-2000rpm->map2
-3000rpm->map3
-4000rpm->map4



How is it possible 4 different programms to exist in the factory ECU?

The binary file of the factory ECU is about 60-70% written. So there is about 30-40% of free space inside the flash memory. That is where we put the extra code with the rest of the 3 programs.

With MapSwitching we can have:
*Timing advance
*Pressure control
*Requested air/fuel ratio
*Different air/fuel ratio for different types of fuel, like E85, M85

                     


Revlimit - Multimap Switching in VAG 2.0TFSi (Bosch MED9.1)

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