Originally Posted by Trustworthy
In other words, there is no way to increase the boost by interevening on a software level only?
The user manual for this engine says:
quote:
"...a wastegare valve is fitted which is controlled by a pneumatic actuator which makes it possible to shutter the passage of exhaust gas to the turbine depending on the engine's need of power/torque"
Unquote
The wastegate is pnuematic, and it is operated whan the boost reaches a a certain level. However most modern engines have an electronic solenoid which is connected bewteen the boost source and the wastegate. The ECU controls whan this valve opens, and when it is closed the boost is prevented from reaching the wastegate. The wastegate will then stay shut even though the boost has risen.
After reprogramming the ECU it will not open the solenoid until a higher boost level has been reached.
There is a section under wastegate here that explains it a bit further..
Turbocharger - Wikipedia, the free encyclopedia
Fiat Coupe 20VT, mildly tuned to 260bhp
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