Hello ... I'm driving Stilo1.9 jtd, 2003 age, and most recently at greater speed in the 4 and 5 speed, there is a noise coming from the rear wheel or i think so ... not the engine ... the noise I had never heard .... As for the engine power, there is no difference, as before ... if anyone has an idea what it could be?? that there may have to do with the turbine?? thanks