180 hp AUQ against 150 hp 1.9 TDI

Hello This is my first post in these forums. You probably have the most experience with the 1.8 t I drive a Bora Variant with an AUQ 180 psund 6 course. The driving performance is a little bit bad than bein TT. I also bigger and heavier than a TT. Recently I am on the highway against a Seat Leon with 150 TDI ps with 6 course risk and could just keep it behind me. Is that normal. The TDI’s are going quite well but I didn’t think so well either. my engine I hear the 20 valves quite clearly and it sounds almost like a diesel at idle. That’s what I believe from the belt. Is that normal too. The engine is running well on the other hand. mfg mchoppi