Peugeot 307 xr diesel 2003 model My car is making noise from the lifters. I took it to the cover shop in Izmir 6th Industry. I had the lifters and many other parts fixed so that I could drive it without any problems. However, after the repair, the car barely accelerates to 90-100 km/h. How many times has the turbo been changed? The flow meter was changed twice. The problem is the same, but it didn't change. They checked the synchronizer. The synchronizer is not faulty. What is the problem? Can anyone help?