Mag00n

I switched from 10w30 to 15w50 for summer and because the 15w50 is said to be ideal for performance/turbocharged engines etc. The first thing I noticed is that instead of hitting full boot at ~4.5k I don't get it until around 5k. Not a huge difference but enough to kinda **** me off. I liked the way the car drove before. Anybody ever get this before?