Hello! My C30 T5, built in 2008, 55,000 KM, 230 HP Turbo 5 cylinders is a bit of a concern for me at the moment… I was with him recently on the highway. In the past he reached the top speed of 230-240 km/h, according to Tacho, without any problems, as pulled by a rubber band. Now he pulls from about 140 km/h only very slowly to about 190 km/h, it feels like he lacks at least 100 hp. In the lower speed range I notice no loss. There is still a good pull. But that’s my subjective feeling. I have not measured the time of 0-100 yet. The car was always regularly in inspections, directly at Volvo. The wear parts have always been replaced, I use the good 0W30 oil… Otherwise everything is still original at the car. The onboard computer also reports no faults. Had someone here already had the same problem? – Can it be that a hose in the area of turbo-conductor is still a little bit of pressure built up? Before all the bad pulling in the fourth gear. Or maybe the order is something better for me?