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ASX 1.8D 150Hp

STT Emtec Power Kit for ASX 1,8D 150Hp


• Power increase 18% (150-177Hp)

• Maximized response and driveability
• Low fuel consumption in all driving conditions
• Maintaned low exhaust emissions
• Fulfills todays exhaust legislation



ASX is Mitsubishi's contribution to the popular mini-SUV class. It has a new all-aluminum engine with variable camshafts, which is called MIVEC (Mitsubishi Innovative Valve timing Electronic Control system). The engine has unusually low compression ratio (14,9:1) but with the help of ceramic glow plugs, the cold starting capability is splendid. The low compression ratio results in lower peak cylinder pressure, which means that the engine can have high power output.


Stages of development


Vehicle measurements

The first step in the development of a new power system is to carry out measurements and driveability tests on the standard car. For these measurements, the car is fitted with a data logger, which collects engine-related data such as pressures and temperatures.


Development of electronics and hardware

The details that the system will be composed of, in the form of brackets, wiring and control unit, are developed and tested to ensure full functionality in the car.


Enigne test cell activities

The engine is removed from the car and installed in our engine laboratory. In the test cell measurements are performed on the standard engine, to get information about the engine characteristics.
With the baseline data in mind, we start the calibration of our system where we fine-tune all engine parameters throughout the rev range. In the testbed, we also adjust the  transient characteristics to maximize engine response and driveability.



Vehicle test 2


When the system is ready in terms of basic calibration and hardware, the system is tested in the car. In addition to ensuring full functionality, there can also be some minor changes to driveability related parameters, to further improve the feeling of the car.


Long Term test
The result of the development is tested in a field trial in a number of vehicles, while the durability of the engine hardware is tested in the engine test cell. When all has passed the long term testing, the system is ready to be sold.


Control strategy


STT Emtec's Clean Power output enhancement sytem affects all engine software parameters. This includes fuel pressure, injector opening time, and time of injection. Although turbo pressure is controlled actively to control the air / fuel ratio and the load and speed of the turbo charger. Clean Power System will give you not only more power and excellent driveability it also guarantees low consumption and maximum reliability with minimal environmental impact.

Safety features


Clean Power system monitors all engine parameters to protect against overload. The system limits the engine power, for example, when driving at high altitude or in extremely hot conditions. In addition, all the standard safety features are still active.



The system to ASX consists of a control unit (ECU), a "break-out box" (BOB) with cabling and mounting hardware.

© STT Emtec AB, Box 46, 862 02 Njurunda, Sweden    Phone +46 60 64 10 40   info@sttemtec.com

Visiting address: Njurundavägen 16, 862 40 Njurunda, Sweden. STT Emtec, engine and emission technology.